What is Skank-up?
1.
Someone's makeup in a day, that was obviously applied the day before, maybe even a few days before. When the eyeshadow has creases and is uneven, and the eyeliner is crusted in the lashes, ETC ETC.
Girl 1: Ewwww did you see that girl?!!!?1
Girl 2: Which one??1?!!?1
Girl 1: The bitch with the skank-up on her face!!!!!!11one!!!
Girl 2: Yeah!!! That dirty slut needs to take a shower and wash the shit off!!!
See