"Why didn't the skeleton climb the mountain?"
"It didn't have the guts!"
"Why didn't the skeleton climb the mountain?"
"It didn't have the guts!"
Alright listen up, you soft-brained simpleton. The skeleton couldn't climb the mountain because it didn't have any guts, get it? Guts! Because it's a skeleton! And skeletons don't have organs, which include the guts! That's what makes it funny, you cotton-headed ninny muggins.