College students who insist on constantly taking up space in a residence hall's lounge. Lounge rats tend to partially complete homework, listen to annoying music, talk obnoxiously loud, and facebook while in the lounge. Lounge rats are uniquely annoying due to the fact that sitting in the lounge all of the time makes it awkward for everyone else that has to walk by.
Mike: Damn, Greg, I can't walk five feet down this hallway without running into a pack of lounge rats!
Greg: Yeah, they creep me out man. That Karen girl is always following me!