Just because an actor gets called "grandpa" doesn't mean he didn't go absolutely, sexily nude in the past. Grandad Martin Sheen showed his cock to the camera in a trippy Apocalypse Now scene. His son Emilio Estevez stood up from a bath to show ass and back sack in Young Guns. Brother Charlie Sheen made his dad proud by going dick-out for a moment in The Arrival. Grandzaddy Kirk Douglas shows his buns in Saturn 3 and his son Michael Douglas did the same in Basic Instinct. Papa Clint Eastwood gave his derriere camera time in Tightrope and his own son dropped towel to show his tush in The Longest Ride. Surprising grandpa Jim Carrey had a hot nude scene in Ace Ventura: Pet Detective. The sexy Sean Bean ran naked for full-frontal fun in Lady Chatterley. Grandpa Donald Sutherland was ass out in Don't Look Now where we couldn't stop looking. His son Kiefer Sutherland took out his buns in River Queen. Papa Pierce Brosnan went full zaddy when he strips naked in Nomads to give a look at his gonads. Finally, Mel Gibson famously showed his buns in Braveheart.