muddy vag Share definition Flag A term used by pseudo-gay sexual predators(i.e. Bros) in reference to their victim's anus. Short for: muddy vagina. "Hey, Collin looks tired today" "Yea, I heard several sailors worked his muddy vag hard last night" muddy vag by Hercules E. Rockafeller March 2, 2008 0 0 Get merch Get the muddy vag mug. Buy Now — $32.95 See more merch