bbmm Share definition Flag pronounced as “bee-bee-em-em”. short for “baby mama”, this word can be used not only to describe an actual baby mama, but also as a n endearing phrase for your friends “hi bbmm, how you been?” “you’re so valid, bbmm” bbmm by Cxitln October 2, 2019 0 0 Get merch Get the bbmm mug. Buy Now — $32.95 See more merch