Oinkment

Alright, listen up, buttercup. This joke is a real knee-slapper because it's a pun. Get it? A PUN! The joke sets up a question about what you would give a pig with a rash. Now, instead of some cream or salve, the answer is "oinkment" which sounds like "ointment". Oink is the sound a pig makes. I bet you didn't know that. It's funny because it uses the pig's sound in place of part of a word. You probably didn't notice. I would not be surprised, little buddy.