Using something they don't like. What kind of irritated nerd complains because somebody is using a "bad" pokemon? "Stop using X in OU! It's terrible and it sucks!" Who cares? If somebody wants to suck at the game, then let them. At the end of the day, it makes them easier to beat and after losing enough times, they'll come to their senses. Who cares if Terrakion is UU. Use it and take pride in the fact that you're using a good pokemon while others aren't.
The same goes for the people who complain about everybody using "cheap" or overused pokemon by the way. Stop being a baby because people are trying to enjoy the game or win matches. --- Sonic's Earth IS Earth. This has been proven through science~Nacho_Burger
I dislike seeing the same 10 pokemon over and over and over. Variety is the spice of life! --- If you had a lisp, you'd say it's kicking theriouth ath. http://31.media.tumblr.com/tumblr_mdrg43DmXU1rlqlyko1_500.gif