A woman of lose morals (slut, whore, etc) who's promiscuity has left her so loose that it is as if she has a vaginal opening the size of a 10l bucket.
Fuck off Bucketguts.
1: Did you hit that shit?
2: Yeah, met up with her last night
1: How as it?
2: She's a right bucketguts, but i made do.