Former WWE wrestler, now UFC fighter CM Punk just disrespected his opponent in a major way

This one might end quick.

CM Punk will make his UFC debut on Saturday night, and any hope that 24-year-old Mickey Gall might have a soft spot in his heart for the 37 year old former WWE wrestler went out the door Friday night at the weigh in.

After Punk and Gall both made weight, the younger MMA fighter extended his hand before the highly-anticipated showdown on Saturday. Punk stared Gall down, obviously irritating his opponent.

We'll see what happens when Punk steps into the Octagon for the first time in his career. Gall is 2-0 over his short career.