Poopy head is a sexual act in which two people have anal sex but the person receiving the anal must take a shit and not wipe before the anal and the person giving the anal must not wash their penis after the anal, it is also an insult for someone who does that
Girl 1: that guy I was giving a bj to's dick tasted weird
Girl 2: I think that guy likes poopy head
Girl 1: eww, I'm gonna go wash my mouth
The single most powerful word known to man (will probably kill the person you say it to so be careful)
Random meanie: twat
You:poopy head
Random meanie: *dissolves into atoms*
Noun. 1. shithead - a stupid person; these words are used to express a low opinion of someone's intelligence.
poopy head you poopy heads so leave them alone to cry