Skinny-dipping enthusiast Matthew Fox says that his affinity for swimming in his altogether is mostly about shock value.

“When I was a kid there wasn’t a huge delineation in our family between having clothes on or not having clothes on. And the reason I have so much fun doing it now is people are so shocked by it, and, like, ‘Oh, my God, Fox just took his clothes off!’” the 40-year-old Lost star tells Men’s Journal (via The Scoop).

“But, I mean, just how long ago was it that we were all wandering around in loincloths? I don’t know, dude, but I grew up, all the way until I was 22 years old … in locker rooms showering with f—king 40 other dudes and you’re not checking each other’s [bleep] sizes out, you’re just walking around like it’s no big deal. And no, I don’t take my clothes off all the time because I think I have a huge unit and want to show it off. I do it because it’s frickin’ funny!”

Source: Us Weekly