1 definition by Pic Blaynun
While a man is standing up and receiving oral he suddenly pulls out, spins around in a circle, and whacks her in the face with his member leaving a penis length mark on the side of her cheek and then yells, "BOOMSLANG, BITCH!!"
I was out with my girlfriend last night and she was giving me this great blowjob and then I totally boomslanged her. She still has the marks.
by Pic Blaynun June 2, 2007