The act of telling terrible jokes for your own amusement, no matter how disgusted the people who hear them are, or how much bodily harm they threaten you with.
Zach: What's a pirate's favorite kind of chips?
DieLawn: . . .
Zach: Sea salt and malt vineGARRRRRRRR.
DieLawn: I'm going to stab you in the throat if you keep joking off.