Dan over at Pokerati is relentless and inspiring in his coverage of the recent poker room busts around Dallas. His most recent post offered a humorous look at SWAT team hand signals. As I happen to know members of law enforcement also play poker, I think there's a decent chance they use hand signals while they play. Or if they don't, they should.
I'm sure the signals, like police radio ten-codes, change from city to city. Around G-Vegas, here are some of the more popular poker hand signals.
Wanna make your own?