Having a sexual act commited upon you three times in the one night by a person named Peter. For example, Girl (or fat mess) meets Peter in the club. Girl invites Peter back to house. Girl gets fucked by Peter three times in the one night. Girl has been peterised. Can also happen in an alley.
"I'm a fuck you once, then i'm a fuck you twice, then i'm a peterise you bitch"
"Did you hear the girl over the road got peterised the last night"