Do You Understand This Joke? Once there were three men named Manners, Shut Up, and Poo. they were driving along in their car, and Poo threw a can out the window. "You can't do that Poo" said Manners. So they pulled over into a non-parking zone, and Poo went out to look for the can. He took such a long time, that Manners had to go looking for him. Then a cop came by. He said "What's your name? Shut up said "Shut Up" "What's your name?" "Shut up." "What's your name?" "Shut Up" "Where are your manners?" "In the ditch looking for Poo." Get it?