• May include: A black short-sleeved t-shirt featuring a graphic of a black cat sitting in a corner facing a wall covered in complex physics equations and diagrams. The text above the graphic reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge."
  • May include: A denim blue t-shirt featuring a graphic of a black cat sitting in front of a wall covered in complex physics equations. The text above the cat reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge." The shirt has a crew neck.
  • May include: A berry-colored t-shirt featuring the text "Meanwhile, inside the box, Schrödinger's cat plans its revenge." Below the text is a graphic of a black cat sitting and facing a wall covered in complex mathematical equations and diagrams.
  • May include: A charcoal gray t-shirt featuring a black cat sitting in front of a wall covered in complex physics equations and diagrams. The text above the graphic reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge." The shirt has a crew neck.
  • May include: A black t-shirt featuring the white text "Meanwhile, inside the box, Schrödinger's cat plans its revenge." Below the text is a graphic of a black cat sitting in a corner facing a wall covered in complex mathematical equations and diagrams.
  • May include: A charcoal gray short-sleeve t-shirt featuring a black cat sitting in front of a wall covered in complex physics equations and the text, "Meanwhile, inside the box, Schrödinger's cat plans its revenge." The shirt has a crew neckline.
  • May include: A navy blue t-shirt featuring a graphic of a black cat sitting in front of a wall covered in white physics equations and diagrams. The text above the cat reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge."
  • May include: A blue crew neck t-shirt featuring the white text "Meanwhile, inside the box, Schrödinger's cat plans its revenge." Below the text is a graphic of a black cat sitting in front of a wall covered in complex physics equations and diagrams.
  • May include: A dark olive green t-shirt featuring a graphic of a black cat sitting in front of a wall covered in complex physics equations and diagrams. The text above the graphic reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge."
  • May include: A brown short-sleeved t-shirt featuring a graphic of a black cat sitting before a wall covered in complex physics equations. The text above the graphic reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge." A circular brown tag labeled "Espresso" is visible.
  • May include: A dark forest green crewneck sweatshirt featuring a graphic of a black cat sitting in front of a wall covered in complex physics equations. The text above the graphic reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge."
  • May include: A charcoal gray crewneck sweatshirt featuring a graphic of a black cat sitting before a wall covered in complex mathematical equations. The text above the cat reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge."
  • May include: A maroon long-sleeve sweatshirt featuring a graphic of a black cat sitting before a wall covered in complex mathematical equations. The text above the graphic reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge."
  • May include: A size guide for Comfort Colors 1717 t-shirts featuring four views of a charcoal grey shirt labeled Small and Large. Includes text stating model height and weight, plus an adult unisex sizing chart with width and length in inches.
  • May include: A collection of folded t-shirts arranged in a grid, showcasing a wide variety of colors including white, ivory, banana, butter, mustard, terracotta, burnt orange, yam, grey, granite, island reef, chalky mint, seafoam, light green, bay, khaki, sage, moss, hemp, blue spruce, chambray, lagoon blue, flo blue, orchid, violet, grape, ice blue, blue jean, midnight, true navy, blossom, crunchberry, watermelon, heliconia, red, berry, brick, crimson, chili, espresso, graphite, pepper, and black.
  • May include: A charcoal gray short-sleeve t-shirt displayed next to a list of washing and care instructions. The text reads: WASHING & CARE Instructions, TURN GARMENT INSIDE OUT, MACHINE WASH COLD, DO NOT IRON ON PRINT, DO NOT BLEACH, DO NOT DRY CLEAN, DRY ON LOW SETTINGS.
  • May include: A beige informational graphic with brown text and illustrations. The header reads WHY SHOP WITH US? Four boxes contain icons of a pocket watch, thread spool, sewing machine, and clock, with text describing service features and contact info.

Schrödinger Cat T-Shirt, Funny Physics Shirt, Quantum Cat Nerd Tee, Science Humor Graphic, Smart Cat Meme Shirt

Schrödinger Cat T-Shirt, Funny Physics Shirt, Quantum Cat Nerd Tee, Science Humor Graphic, Smart Cat Meme Shirt

$20.39
$20.39 $39.98
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  • 30-day returns and exchanges with a prepaid label. See conditions.
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May include: A black short-sleeved t-shirt featuring a graphic of a black cat sitting in a corner facing a wall covered in complex physics equations and diagrams. The text above the graphic reads, "Meanwhile, inside the box, Schrödinger's cat plans its revenge."

Schrödinger Cat T-Shirt, Funny Physics Shirt, Quantum Cat Nerd Tee, Science Humor Graphic, Smart Cat Meme Shirt

$20.39
$20.39 $39.98
SAVE 48% Sold out

Schrödinger Cat T-Shirt, Funny Physics Shirt, Quantum Cat Nerd Tee, Science Humor Graphic, Smart Cat Meme Shirt

✨ MEET YOUR NEW FAVORITE TEE
Elevate your everyday look with our exclusive design. Whether you're hanging out with friends or relaxing at home, this tee combines unique vintage style with everyday comfort.

🎨 Looking for a specific color?
The colors listed below are the options currently available in our Etsy dropdown menu.
If you’re looking for a different color, feel free to message us — we’ll be happy to check availability and print your item in your preferred shade 💬🎨

💛 Not sure which color or style is right for you? Just reach out — we usually reply within 24 hours.

👕 OUR APPAREL

✨ Comfort Colors® 1717 T-Shirts
• Garment-dyed for a true vintage look
• Soft, lived-in feel from the first wear
• Heavyweight fabric with a relaxed fit

👕 Gildan® 5000 T-Shirts
• Classic midweight fabric
• Durable and reliable for everyday wear
• Smooth surface for clean, long-lasting prints

🧥 Gildan® 18000 Sweatshirts
• Cozy fleece blend, soft on the inside
• Warm, durable, and great for layering
• Classic fit that holds its shape

🕒 PRODUCTION TIME
Some colors may take a little longer to produce, but we always do our best to ship all orders within 5 business days.

📦 MADE JUST FOR YOU
Each item is printed to order using high-quality inks for vibrant, long-lasting designs.

💌 OUR PROMISE
Because this item is custom-made, we don’t accept returns.
However, if there’s any issue with your order, message us — we’ll make it right.

🧺 CARE INSTRUCTIONS
Keep your tee looking fresh:
• Wash inside out at 30°C (90°F).
• Air dry only (skip the tumble dryer).
• Do not iron directly on the print.

With love,
OldRetroTees 🤍

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Shipping

Estimated delivery is 5–7 business days from order placement, including production and shipping. Shipping to the contiguous 48 United States and Washington, DC is $3.99 per order under $60 before tax and free for orders of $60 and up. We do not ship to Alaska, Hawaii, US territories, APO/FPO/DPO addresses, or destinations outside the United States. See our Shipping Policy for full details.

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Returns & exchanges

Start a return or exchange within 30 days of delivery. Items must be new and unused, with tags and original packaging. We provide a prepaid return label; return shipping is free and there is no restocking fee. See our Returns & Refunds Policy for conditions and instructions.

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