Something you can say whenever someone you disapprove of walks in the room. So basically it will be said often and repeatedly. Can also be used for someone that you see on T.V., or in a magazine etc...
In Texas Hold 'Em poker, the player who posted the large blind at the beginning of the hand is the last person given a chance to bet before the flop. If all the other players call the blind without raising the bet, the player with the big blind can then raise, causing the betting to circle the table again. This is a good way to make money but a bad way to make friends.
"Well, are you going to check so we can see the flop or jerk raise?"