One of your friends who is straight edge and always is a bitch whenever you talk about getting totally smashed, or participating in an awesome gang bang. They live to sap the fun out of your life so they can feel better about their own, while telling themselves they are "clean" and "holy".
They will usually roll their eyes and pretend not to listen when you talk to your friends about last nights happenings. Often they think of themselves as "superior" or "better" then most people purely because they don't drink/do drugs/have sex/anything fun...
Brian: What was up with that bitch with the X's on his hands last night? He tryed to pour out my capn's.
Tim: Yeah, that kid is so straight dredge.