Knock Knock… Who’s There? DETONATION! T-Shirt

***LIMITED RUN SHIRT - ONLY 20 AVAILABLE!***

Every car enthusiast knows there are some knocks you definitely don’t want to hear. 😂🔧

This shirt turns one of an engine builder’s worst sounds into the ultimate automotive joke. Featuring a mischievous cartoon piston knocking on the door with the punchline:

“KNOCK KNOCK… WHO’S THERE? DETONATION!”

The bold black-and-white design gives it a clean, old-school garage look that’s perfect for anyone who understands that engine knock is never a welcome visitor.

🏁 Perfect for:
• Car enthusiasts
• Tuners & modified cars
• Turbo and high-performance builds
• Drifters & drag racers
• Mechanics & engine builders
• Anyone who has pushed the tune a little too far

Wear it to the track, car meets, drift events, the garage—or the next time someone says, “What’s that noise?”

Because sometimes the scariest sound isn’t a rod knock… it’s detonation knocking at the door. 💥