It's easy. All you need to know are:
I laughed out loud last night when I saw "Werewolves On Wheels" was playing on MonsterVision. Just put anything on wheels and I'll at least grin. Golden Retrievers on wheels, Dumbasses on wheels, Republicans on wheels. Simple, isn't it?
Then there's brickhead, shithead, cheesehead, fathead, doghead ......
If you want me to lose bladder control due to laughing, roll out Gilbert Gottfried.
Stop it, you're killing me.