Someone who waits for any tweet, for the sole purpose of replying to that tweet regardless of the content of who said it.
Mike: I blocked Daniel on twitter
Joe: Why?
Mike: He's a twitter sitter!
Joe: Oh, my friend replies to just about every tweet too!
Joe: Why?
Mike: He's a twitter sitter!
Joe: Oh, my friend replies to just about every tweet too!
by blaine.alan April 27, 2009
Get the twitter sittermug.