When you wrap you finger in toilet paper and insert it into your own arsehole after taking a shit to give it the best possible clean.
Person 1: my girl is going to rim me tonight.
Person 2: make sure you give yourself a good CueTipping first. That will improve your chances of her doing it again.
Person 1: good thinking
Casual or unconstrained sad stand up bits about other comedians, typically in a cowardice fashion. After the comedian has left the stage.
Or outside of a roast.