Lagolier
A person who joins a server, lags it so bad your game turns to nonsense, and then leaves like they were never there.
He logged in, my game turned into a mess of lag and errors, and then he left me hanging.
He joined my server, and my game went from smooth to chaos. He left before I could even yell at him.
He came in, messed up my game, and vanished like he had a magic cloak. That’s a Lagolier.