We're pretty sure that Zac Efron will be naked for at least half of his new movie Dirty Grandpa!
Don't believe us? The 27-year-old was seen (above) filming the upcoming comedy, and was once again in nothing but nude underwear!!
The actor and his hunky stunt double switched off in a scene where Zac's character rides a large piece of vibrating machinery, also known as a motorcycle!
Based on the marks on his chest and the toy pressed to his crotch, it's safe to say this is a continuation of the scene he filmed last week on a beach wearing the same flesh colored undies!
So, maybe he isn't naked for half of the movie as opposed to just one, long scene where he's running around town in his birthday suit.
Hey, we'll take it!
Are YOU excited to see
Efron's Body Dirty Grandpa in theaters February 2016?
[Image via FameFlynetpictures.]