Mike Marsland/WireImage

Shirtless Zac Efron (And Robert De Niro) Slay In This Exclusive Poster From 'Dirty Grandpa'

Let's get dirty.

In their new movie "Dirty Grandpa," Zac Efron and Robert De Niro will take a sure to be rowdy road trip to Florida, in the days leading up to the former's wedding. Judging by the bawdy trailer, there will be golf, crack cocaine, and an against-type Aubrey Plaza involved -- but we can't focus on any of that, because we're too distracted by all of the shirtlessness on this exclusive poster:

Don't lie. You're also impressed by De Niro's well-defined abdominal region. And Efron's, of course.

"Dirty Grandpa" hits theaters on January 22.