[crankalicious]

Psychologically speaking, this kind of behavior is a recognition by the offending player that he played like an idiot. He's projecting.

A recent hand that pissed me off: turn card gives me two pair on a three-to-a-flush board. Other players clearly have one of the suit. I min bet trying to build the pot. The river makes their flushes and I have to fold. I'm pissed when they both turn over garbage, but who am I really mad at? I'm mad at myself for not forcing them to make a hard decision instead of giving them the odds to call and chase the flush.

Frequently, stupidity reveals itself as anger.