Priest vs. McDonald's

Alright, listen up, buttercup. This joke is all about a gross comparison. It's sayin' that priests and McDonald's have somethin' nasty in common: puttin' their "meat" (wink, wink, nudge, nudge) in young buns. Get it? It's funny because it's icky and makes you think about stuff you don't wanna think about. And you, with your smooth brain, probably needed that explained. Don't worry, I won't tell anyone how slow you are.