abbreviation of blow job or blowjob. Occurs when a female puts a man's penis into her mouth and sucks on it while tonguing the head. Apparently very popular among young teens, equivalent to kissing.
I don't think I will ever give a BJ... but I heard my best friend did it in the car while her boyfriend was driving.
1. blow job
2. when a girl makes a guy happy in his pants by sucking on his member
3. the name of some geek who gets horny from rubbing his calculator violently
1. She gaveone hella good BJ last night.
2. Gimme a BJ.
3. Stop buying BJ calculators. He keeps staining his pants.