Forum abbreviation for: 'You Just Pulled A Mexican'. Used as a comment to say someone that tried to be funny wasn't at all. It's said it originated on a forum, in a convo between two respected users.
Sources tell their usernames were Shadow and Pop.
It was also said that if anyone used it against the two creators, they would automaticly be declared 'self-owned'
User1: God, I don't know what to say..
User2: Then just type it
User3: OMG YJPAM -_-