"I think those muscles are all show, no go; there's no way their tendons are as healthy as those big muscles - they're 70 years old and I doubt in that movie you're seeing them doing much sprinting... I know that they're all natural and that's just a result of a great diet, but I think there might actually be some narcotics involved. Have you seen the posters? It looks like the zombie apocalypse." Dax Shepard pokes fun at the aged stars of The Expendables 2.