Our Ask Billy question comes from Mike in San Diego: “Longtime reader and subscriber to BillyMasters.com.  Loved the photos this week of Zac [Efron] walking around practically naked.  But I hear there are even more pics – including one of him naked on a motorcycle.  I’m sure you can find it…if it’s real.”

I can find it, and it’s real…kinda.  The photos in question have been filtering out from the set of Bad Grandpa.  Previously we shared snaps of Zac walking around practically naked with only a bumblebee strapped to his nether regions.  In the same scene, he apparently hops on a hog and rides away (I will pause for dramatic effect so that you can picture Zac hopping on a hog…or anything else).  Alas, the naked guy on the motorcycle wasn’t Zac.  While less scrupulous reporters have said that the guy was Zac’s butt double, I did some sniffing around and discovered the truth.  The guy was hired to be Zac’s stunt double.  OK, so he was a stunt double who also does nudity, but our sources say Efron had no problem with the nudity….just with the cycling.  You can check out the photos of both boys on BillyMasters.com.