Banana?

Ah the valuable things you learn from a Boilermaker from Detroit.

“Put a banana in a guy’s tailpipe. The car will start but run real shitty. First they’ll tow it, which will cost a couple of hundred bucks,. Then they’ll change the catalytic converter which is about $1,500. By the time they find the banana it’ll cost him almost two grand.
Get a green banana, they last longer.”