bob: hey, don't you know that chick? tom: yeah, she was bmxing me and my roommate the other night
when a woman, on her knees, jerks off two guys that are facing each other at the same time, one with each hand
"bob: hey, don't you know that chick? tom: yeah, she was bmxing me and my roommate the other night" What is the definition of "bmxing"?