Zac Efron Shares New 'Dirty Grandpa' Photo, Dwayne Johnson Comments 'Nice Tits'

Zac Efron wears an orange crop top of sorts and shows off his amazing abs in this new still from his upcoming movie Dirty Grandpa.

The 28-year-old actor shared the photo on Instagram. He stars alongside Robert De Niro.

“It’s been a life long dream of mine to work with De Niro,” Zac captioned it. “Lo and behold, I spend most of the movie naked or in women’s clothing. And you know what…it was TOTALLY WORTH IT. I can’t wait for you to see @dirtygrandpa – it’s hilarious! Save the date for a wild (and really weird) ride on JAN 22 #dirtygrandpa”

Zac‘s Baywatch co-star Dwayne “The Rock” Johnson commented on the photo, “Nice tits brother. See you soon!” LOL!

Bigger photo below…