Jay Z was on the verge of going into attack mode when a crazed fan went for the Beyonce money shot.
Jay and Bey showed up at the SVA Theatre in NYC Monday, and word quickly spread. By the time they left there was a big crowd, and one guy was hell-bent on getting a pic with Bey.
Check out the video ... Jay grabs the guy and the bodyguard quickly swoops in.
Don't mess with Papa Bear.