It is short for 'bubble butt jizz' and this is what you get when you orgasm from anal sex
I just got a bubble bj
by bubblebjer June 27, 2011
Bubble BJ is a slang for Bubble Butt Jizz which involves an individual orgasming from anal sex in which bodily fluids are emitted from the anus. The predominate recipients of bubble bjs are males.
Did you hear? Jason made Victor have a bubble bj!
by Bubsvd July 06, 2011