1. Unannounced and/or forcible sex which ISN'T rape. The kind performed in roleplay, in "dom/sub relationships", and in certain orgy/rock-star-groupie type situations.
2. The old male trick of pulling the penis out of the girl's cunt and slipping it up her shit-hole.
e.g: you can tell a true "do-me girl" by the fact she can't remember her last fuck which wasn't surprise sex