LMSYDB Share definition Flag The definition of lmsydb would be "Let me suck your dick bitch." It is also used by thots who want to SUCC. Random girl: Hey baby LMSYDB Guy: nah bitch you fuccing ugly LMSYDB by anonymous April 12, 2022 0 0 Get merch Get the LMSYDB mug. Buy Now — $32.95 See more merch