SKU: 1744181533

John McEnroe 'You Cannot Be Serious?' T-Shirt

$25.20 $28.00
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

John McEnroe 'You Cannot Be Serious?' T-ShirtChannel your inner tennis legend and some anger with the John McEnroe 'You Cannot Be Serious?' T Shirt! This shirt is not just a piece of fabric; its your ticket to joining the ranks of the most entertaining tennis meltdowns in history. Made from soft, breathable cotton thats as comfy as a cushion on a tennis court, you'll feel like you just won Wimbledonwithout ever lifting a racket! Featuring a print that screams both style and sass, this shirt is

Channel your inner tennis legend and some anger with the John McEnroe 'You Cannot Be Serious?' T-Shirt! This shirt is not just a piece of fabric; it’s your ticket to joining the ranks of the most entertaining tennis meltdowns in history. Made from soft, breathable cotton that’s as comfy as a cushion on a tennis court, you'll feel like you just won Wimbledon—without ever lifting a racket!

Featuring a print that screams both style and sass, this shirt is perfect for those who appreciate a good sport… or a good sport throwing a fit. With double stitching and a pre-shrunk design, it’s built to last through all your spirited debates about line calls and your friends’ questionable taste in tennis players.

So, go ahead, sport this tee at your next match or just while lounging on the couch with a bowl of popcorn. Either way, you’ll be saying “You cannot be serious!” every time someone asks why you look so fabulous. Get ready to serve up some serious style!

***FREE SHIPPING on all orders***

***We DO NOT provide expedited shipping***

***Printing, production and packaging takes 7-10 days from purchase. Shipping times vary but USA domestic is 5-7 business days after production. International shipping is 7-14 business days (depending on location)***

***We cannot guarantee delivery by a certain date, please use the estimates above and make sure it fits within a suitable timeframe for your needs***

***All t-shirts are made of 100% cotton***

***PLEASE MEASURE YOUR SIZE (twice!) using the provided sizing chart. Due to the nature of our printing process and for sustainability purposes, each item is made to order specifically for you. We print at facilities throughout the world so we can provide faster (and free) shipping. We do not accept returns or exchanges because we do not hold stock. Contact us if there is a significant issue with shipping or damage to the product, otherwise all sales are final***

***Shirt and design colors may vary slightly from the pictures, but we do our best to represent the final product. Sometimes certain colors may not be in stock. If so, we will provide you with another color option or provide a refund***

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 1744181533

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4.3 ★★★★★
Based on 2162 reviews
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Product Reviews
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Verified Purchase
don
Charlottesville, US
★★★★★ 5
Works well!
Style: 16 oz
This stuff works well. I've only ever used it after my tires had been punctured and ran flat... I haven't had a flat this wouldn't seal... 3 uses so far all 3 have fixed flats and been many miles put on since the repairs. I start with as little as possible and if it doesn't seal I just add more, I think I've managed to use far less than recommended and successfully sealed punctures. I've only used it on fat tire e-bike tires. I'm pretty comfortable with the seal and I have no plans to replace the tubes, which saves me a fair amount of trouble. I will update if it springs any leaks without new punctures. It's very easy to use and actually pretty clean especially compared to automotive type tire repair foams. The first repair I used it for was a brand new bike that just wouldn't hold air in the rear, totally unsure what caused it to keep losing air but 2 or 3 small doses of slime fixed it. The most recent slime repair, I had a wobbly bike ride which felt weird and I couldn't figure out why but a few hours after I had returned home both tires were totally flat. They both had a handful or more of some really heavy duty thorns stuck in the tire that likely barely punctured the tubes but the rear tire also had a roofing nail in it. I did not think the slime was going to fill that one, it was a pretty heavy leak once I removed the nail, but Slime did seal it and I've since ridden the bike twice and in the same rough conditions I normally would still holding strong at higher pressure than I normally ride, have yet to drop back down since refilling but I am hoping and expecting it won't be a problem. Two thumbs up. I always keep a small tube in my bike bag and I am confident if I ever need it while I'm out and about it will be useful.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
A
Verified Purchase
Artie
Draper, US
★★★★★ 5
Who can live without slime great stuff and a good price. 👍
Style: 32 oz
If anyone has an outdoor anything that takes air. You should never be caught without this stuff. It seals your tires on almost anything and it lasts longer than you would expect. It’s easy to use and easy to clean up after using it. It will work well for anything that is supposed to hold air. Great product.
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Reviewed in the United States on April 11, 2026
M
Verified Purchase
Mudd
Pawtucket, US
★★★★★ 5
Title: Reliable, Easy-to-Use, and Worth Every Penny
Style: 32 oz
I’ve been using Slime tire sealant for my fat tire e-bike, and I can say with confidence that this product delivers exactly what it promises. The application is simple, the results are consistent, and the peace of mind it provides is invaluable. For anyone who rides regularly — whether for commuting, recreation, or deliveries — this is a product that pays for itself many times over. The first thing I appreciate about Slime is how easy it is to install. The bottle is well-designed, the instructions are clear, and the process takes just a few minutes. You simply deflate the tire, remove the valve core, squeeze in the recommended amount, reinstall the valve core, inflate, and spin the wheel to distribute the sealant evenly. No special tools, no mess, and no guesswork — just a straightforward, user-friendly process. Performance-wise, Slime does exactly what it’s supposed to do: seal punctures quickly and effectively. I’ve had nails, thorns, and sharp debris puncture my tires while riding, and in every case where the leak was within the tread area, Slime sealed it instantly. There’s something incredibly reassuring about hearing that faint hiss of air for a second, then watching it stop as the sealant does its job. It’s a real-time reminder that this product is actively protecting you from being stranded. What sets Slime apart from other sealants I’ve tried is its durability. Once applied, it stays active inside the tube for months, ready to respond to new punctures as they happen. It doesn’t dry out quickly, it doesn’t clump up, and it doesn’t cause balance issues with the tires. For someone who rides almost daily, that reliability is a huge plus. Another thing I respect about this product is that it’s non-toxic and environmentally friendly. If a bit of sealant escapes during a repair, I don’t have to worry about it harming the environment. It’s also water-soluble, making cleanup easy if I ever need to replace a tube or tire. That attention to safety and sustainability shows that the company isn’t just making a great product — they’re doing it responsibly. The value for the price is excellent. One bottle goes a long way, and when you factor in the cost of replacing tubes, paying for roadside repairs, or even the inconvenience of being late because of a flat, Slime is an investment in both savings and peace of mind. For delivery riders like me, it’s especially valuable — every flat avoided means another day of work uninterrupted. In short, Slime is one of those rare products that I can recommend without hesitation. It’s easy to use, effective, long-lasting, and backed by a company that clearly understands the needs of cyclists and e-bike riders. It has already saved me from countless headaches, and I plan to keep a bottle on hand at all times. If you ride regularly and haven’t tried it yet, you’re taking an unnecessary risk — this is one of the best preventative tools you can add to your maintenance kit. Verdict: Five stars for performance, ease of use, and overall value. Slime is a must-have for any serious rider who values reliability and wants to keep rolling no matter what’s on the road.
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Reviewed in the United States on August 11, 2025
D
Verified Purchase
Dina Stewart
New York, US
★★★★★ 4
Slime is good, pump is a disaster
Style: 1 gal, Style: 1 gal
The only reason I am giving this a 4 star(not zero) rating is the slime itself. The actual pump on the 1 gallon canister is awful. It makes so much mess, so I do not know whether I pumped the slime into the tubes or it all just spilled out of the base of the pump. The bottles worked great, but this time I needed to use more slime for a bunch of tires. What a slimy mess that was. Very poor pump design. Only after I spilled who knows how much of the slime, I finally washed it and was able to see the problem. The cap at the base of the pump got unscrewed and let all the slime lose. I screwed it back up and this should fix the mess next time I use it. Just a heads if someone encounters the same issue.
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Reviewed in the United States on April 22, 2026
S
Verified Purchase
Scott A. Cain
Chelsea, US
★★★★★ 5
Great product
Style: 16 oz
Worked as advertised. I would order again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026

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