Bonehead jokes
Papyrus ran headfirst into a windmill. Guess you can call him a bonehead.
Oh Sans, you're such a bonehead! Sorry if that joke was jaw-breaking! LOL.
Why do dogs like skeletons?
Because they're boneheads.
When Bob the Builder looks at your hairline, he says, "We can't fix that."
Your forehead is so big it gets home before you do.
Your forehead's so big that it has its own gravitational pull.
I hear skeletons like to play the saxaBONE, though I think the tromBONE would be better, but tibia honest, both can be HUMERUS, wouldn't wanna hurt your funny bone, but I think your starting to get BONELY so I'll stop pulling your leg. Now get out before I give you a bad time.
Boner.