A person who posts to a forum or other form of online communication to disrupt or cause widespread argument.
WILK0, troll of the Xbox forums
A chick that smokes too many Bongs before starting work at the pizza shop
Person 1 "Barb? Are you ripping another?"
Person 2 "Huh-huh yeah Wilko. I am such a Bong Rat!"
Person 1 "But you start at Porch's in 5 minutes!"
Person 2 "Did you not hear me? I said I'm a BONG RAT!"
Person 3 "She is."