marshy-flig Share definition Flag stuff that girls get on there twat (usually in the hair) that looks like cottage cheese and marshmallows and it itches bad! Damn!!! Teresa got some mad marshy-flig this mornin after the dog humped her. marshy-flig by KayDrea July 1, 2005 0 0 Get merch Get the marshy-flig mug. Buy Now — $32.95 See more merch