Person who comes to your apartment and stays in your room even despite being unwanted. Initiates conversation then disappears when you turn around to respond. These guys are annoying as shit. They never leave. They bug me out.
Ghost lingerer walks into victim's apartment:
"Hey, can I use your computer?"
"Okay, thanks. I'll install my video game on it and play it for 9 hours straight."
"Lingerer, man. L-I-N-G-E-R-E-R. Bugs me out!"