A person who is so unfortunately ugly; they appear to have spent a whole week, none stop, smashing their face against a fridge to create the full mangled look. For an added feature, the same monster can sometimes complete their metamorphasis by kissing a hot iron.
Tony: Hey Tez, i think we should get the fuck out of here, theres a right beast approaching!
Tez: Don't worry Tony, it's just Vanessa, She's a fridge headbutter!
Tony: All the same mate - I'd rather leave before this ugly bitch takes us hostage.