When you are done banging some chick you blow your wad on her face then wrap her face real fast with saran wrap. After you do this you punch her in the face.
I facemasked an ugly chick last night
1) A protective or disguising cover for the face, often enveloping the entire head.
2) A Penalty in football where the front part of a player's helmet is used to throw another player to the ground.
3) A mask made by the flesh of your murder victim's face.
1) They robbed our bank but they wore facemasks. We don't know who they are.
2) Yeah that was an unintentional facemask. Only five yards lost.
3) Oh shit! Did you see Otis wearing that facemask in Devil's Rejects?