The only reason Charlie keeps winning is he's just playing some dirty pool to create an advantage over his competition.
By Joell
Dirty Pool
(noun)
1. The act of using illegitimate means to gain an advantage over other people, typically for personal gain in a competitive environment, but sometimes just for the fun of it as a means to power trip. Universally considered a dick move against your fellow man.
We were playing Texas Hold 'Em and Chad took the pot when he got a royal flush because he was hiding an ace up his sleeve. He's a cheater. That's not poker, that's dirty pool.
