An a female facial structure resembles that of a much older man. Grandpa face is especially prominent in the girl's nose and mouth. Thin, curling lips are common.
Many times, grandpa face is attempted to be hidden by excessive makeup and blonde hair.
Rostam: Man, that chick at the bar looks mad hot from the back
Ezra: Nah man, she has a totally grandpa face. I wouldn't hit that shit for nothin
Rostam: I heard that that, want to go smoke some dank bud?