1 definition by The dude the third
A BCM is when a man is engaging in sexual intercourse with a woman, and pre ejaculation he pulls out, however while he pulls out he grabs a near by feather and tickles his nose inducing a sneeze, He then ejaculates and sneezes at the same time onto said female in the same general area, and proceeds to mix his semen and mucus together with his finger, creating a Booger and Cum Milkshake aka BCM.
by The dude the third July 31, 2019