A mix between the words resident and slut. First used in the television show Scrubs.
Elliot: No Dr. Murray, I don't want any fries to go with this shake. I don't even know what that means.
Noelle: Excuse me, Dr. Reid
Elliot: What, you want to ask me how many ceiling tiles I've counted this week, or maybe you just want to call me a name like tramp or ho or slesident, which apparently is half slut and half resident