BIM stands for Balls in his/her/your/my
mouth. Used for
people who you dislike or annoy you, or
even sometimes for yourself, when you really messed up.
Steve- That
girl over there likes BIM.
Kramer- Yeah I heard she loves balls in her mouth.
Steve- Wow I just totally got BIM right there.
Kramer- Yeah you totally missed that basket-ball shot, so balls in your mouth.
Tony-HEY
STEVEN. HEY KRAMER.
Steven- Tony huge BIM.
Tony- What does that mean?