noun. From the latin phrase mudicus flappinus; when a female gets feces caked on her floppy meat wings after several bouts of alternating anal, followed by vaginal, intercourse.
Noun; Derogatory/Insulting term to describe a extremely pale girl. Preferably one who is ginger or has lots of freckles. Comes from the fact milk is white, and girls have piss flaps.
See Nicole Kidman for a text book example of milk flaps
I caught him getting off with milk flaps.
Lisa would be ok, but shes a bit milk flaps