Larry Fitzgerald adorably shows young fan what happens when you don't stiff arm

During his pro-am round Wednesday at the Waste Management Phoenix Open, Cardinals wide receiver Larry Fitzgerald received a compliment on his stiff arm from a young fan.

Fitzgerald responded by showing the boy what happens when you don't use the stiff arm.

The boy specifically mentioned Fitzgerald's use of the move against the Packers, presumably the one (pictured above) on his epic, 75-yard catch and run to set up the game-winning touchdown in Arizona's divisional-round victory.