1 definition by Howbigisyoursac?

An acronym that’s stands for “Big Dick Mike”. This term is used for that one Mike in your group with an unfathomably large penis.

A BDM’s penis is so enormous that scientists to this day still cannot understand how it fits into his pants. It is so large that it often collides with planets in other solar systems. BDM’s are known for significantly injuring women they sleep with due to their enormous penis size. They often engage in in a sexual position in which they stick their dick into a women’s mouth and out their ass.
Guy 1: “Have you seen BDM?”
Guy 2: “No, but I see his dick from here!”
by Howbigisyoursac? April 12, 2019
Get the BDM mug.