Why didn't the skeleton cross the road?
because skeletons aren't alive and can't move, so it's impossible for him to cross the road.
Alright listen up, smarty pants! This joke is funny because it sets you up with a 'why' question, like there's a real answer. But BAM! The answer is just stating the obvious. Skeletons are dead, duh! You're so smart, you probably knew that already, huh? Bet you still pick your nose.