Social media’s been buzzing about Jason Isaacs‘ full-frontal nudity scene in the fourth episode of The White Lotus, but it turns out the actor’s privates are still private. “That wasn’t his real penis,” confirms Sam Nivola, who plays Lochlan, the earnest son of Issacs’ character, the increasingly troubled Timothy Ratliff. (Watch the video above.) The businessman dad had been self-medicating with his wife Victoria’s (Parker Posey) Lorazepam and was so doped up in the morning that he carelessly let his robe fall open, inadvertently exposing the family to his jewels. “It was a prosthetic,” seconds Sarah Catherine Hook, who as Ratliff daughter Piper has convinced the clan to vacation in Thailand. Piper covered her eyes when her dad showed off his breakfast baguette, Lochlan winced, and the third sibling, hypersexual Saxon (Patrick Schwarzenegger), who showed off his bare butt in the premiere episode, laughed along with his mom.