Like a hipster, someone who thinks they're really cool and better than everyone else by trying really hard to be different possibly through unconventional means. They think of themselves as being l33t.
Ted: Did you know frank uses QQ?
Rob: Yeah he thinks he's so l33t

Ted: More like l33tster...
Rob: More like l33tster...

Ted: Jinx!
Rob: OMG you got me!
by Ur Mom goes 2 college December 29, 2010
Get the l33tster mug.