I know a troll WHEN THEY ASK QUESTIONS IN ALL CAPITAL LETTERS! THEN, THEY GET OFFENDED WHEN PEOPLE TELL THEM TO HIT THEIR "CAPS LOCK" KEY.
...And how can we forget the ones that refer to new members such commonalities as n00b, newb, newbie, noob, noobie, squid, nooby, etc.?
Should we forget the member that has 5000 posts, spots a new member, and then all of a sudden finds the need to "dominate" him/her and try to make examples out of them by challenging everything they say?