http://nfl.si.com/2013/08/06/nfl-cracking-down-taunting-off-the-snap/
The NFL is tired of players celebrating inappropriately after successful plays and scoring plays, and its officials have evidently been charged with controlling this increasing “menace.” Section 3 of the league’s rule book outlines the behavior that will be penalized, under the banner of Unsportsmanlike Conduct:
“Sack dances
home run swing *this is the rb from the Redskins*?
incredible hulk
spiking the ball
spinning the ball
throwing or shoving the ball
pointing
pointing the ball
verbal taunting
military salute * no mile high salute*?
standing over an opponent [prolonged and with provocation]; or dancing.”
These moves are also verboten:
“Throat slash
machine-gun salute
sexually suggestive gestures
prolonged gyrations
or stomping on a team logo.”