A phrase spoken when falling asleep or passing out during oral or vagina sex to avoid woman becoming upset. The phrase can either buy you time or will cause confusion and take the focus off of your biff.
(couple during intercourse)
Woman: Are you sleeping!?
Man: No, I'm just humming Ludacris.
by DannyHimes January 28, 2006
Get the Humming Ludacris mug.