1 pajama butt, the little opening on your footie underwear. Smartass insult for idiots. Expand yo ass is always openbet you can't zip it up fast enough + Examples
2 the gap between your legs in PJs. Call this on someone being dumb. Expand stop acting so stupid, open your pjs and show memy brain's the only thing closed right now + Examples
3 a joke about forcing someone to put on underwear. 'zip her up' against them. Expand i was wearing my pjs when he walked in, zip me up before you leavehe's got his hands on the zipper already + Examples