Zac Efron Sticks Hand in Shorts, Flaunts Eight Pack Abs!

Zac Efron puts his hand down his shorts while stripped down for a scene in his movie Neighbors 2 on Tuesday (September 22) in Atlanta, Ga.

The 27-year-old actor was seen going shirtless and looking incredibly ripped – he even has eight pack abs!

PHOTOS: Check out the latest pics of Zac Efron

Zac previously showed off his incredible physique while in Hawaii filming another movie. He also filmed a bunch of shirtless scenes for his upcoming film Bad Grandpa, so get ready to see tons of skin from him on screen next year!

15+ pictures inside of Zac Efron shirtless on the Neighbors 2 set…