no one really knows what it means. stupid people just keep saying it over and over, and it drives other people insane.
it acts as an insult, a random sound, a verb, anything! it's very flexible :o
first guy: bwip
second guy: i'll bwip your ass
Male ejaculation sounds.
dude1: bwip bwip
dude2: what does that mean
dude1: maan you dont have a penis!