Because they're paid to.
A Dobie
No one likes the black ones
A buck an ear
Pack your trunk and clear out !"
Donkey!" (Danke) You gotta say it with the shrek accent to work.
Define intervention." Came up with this today at work.
Aqueous humour.
I'm ready to partiem with my perdiem *sorry, not a dad, and the bar tender didn't laugh either
Dadjokes
Because if his punch line doesn't work, you still get a kick out of it.