Honk if your horn is broken!

[anonymous-user]

An old one, but good - possibly the best bumper sticker ever created?

The next best might be "My other bumper sticker is funny"

[pilchardthecat]

[poo at Paul's]

I love big dumps

[Ki3r]

Honk if you want a BJ.

Still laugh at it when that scene comes on in the Inbetweeners.