Look, if you’re a butt person, I can guarantee that Matthew McConaughey puts in a very nice derriere performance in this movie. However, he says that people have been coming up to him to congratulate him on the full-frontal nude scene in Serenity and he doesn’t remember agreeing to or doing that at all.
Article source: https://www.cinemablend.com/news/2465760/matthew-mcconaughey-does-not-remember-going-full-frontal-nude-for-serenity