B.O.B.
acronym for Beat off Ben or anyone who is caught publicly masturbating (in school, church, wal-mart, etc.),
This term was formed to discreetly refer to them without them knowing
Jeff: Dude that dinosaur movie was awesome!!!

Dan: I know, I love Jurassic Park!!!

Hans: But did you guys see Jim?

Jeff: No?

Hans: He was bein a B.O.B. the whole time...it was sick

Jim: GREAT MOVIE GUYS!!!!!!!!!!!!