That's a knee slapper, or should I say, a wheel slapper?
Wheel Slapper
Explanation
Explain Bear
Listen up, buttercup! A 'knee slapper' means something is super funny, like you'd smack your knee laughing. But since some folks are in wheelchairs, they don't got knees to slap, do they? So the joke changes it to 'wheel slapper.' Get it? You're so smart now, probably.
Cosmo idk
what
Cosmo idk
lil bro be upvoting his own jokes