What gets under your skin when playing a poker game?

[VarlosZ]

People who berate, coach, or make snide remarks to the bad players.

Rudeness in general.

That's about it. Oh, an throw in players who multi-table and don't care if they slow down the game. Yes, I'm at three of your tables, and I see that you're in the middle of big hand on this one. That doesn't mean you have to take 30 seconds to fold your 84o on the other one.