James Franco and Keegan Allen posed shirtless for a picture on the set of their new gay porn movie King Cobra.

James Franco Shirtless

Franco and Allen left little to the imagination in a picture the former posted on his Instagram page. In the snap, Allen, best known for playing Toby Cavanaugh on Pretty Little Liars, is wearing nothing but a pair of Nasty Pig briefs in the picture. As for Franco, he’s slightly more modest in a pair of low-hanging shorts.

“KING COBRA ??????,” Franco captioned the picture.

A photo posted by James Franco (@jamesfrancotv) on

King Cobra is based on the 2007 murder of gay adult film producer Bryan Kocis, who will be played by Christian Slater in the film. Brett Corrigan, who was kidnapped in the scheme, is being played by Disney Channel star Garrett Clayton.

#KingCobraMovie A photo posted by Garrett Clayton (@garrettclayton1) on

King Cobra is not the only porn-centered project Franco is currently working on. Last week, he was spotted on the set of HBO film The Deuce, which will focus on the porn industry and prostitution in New York City in the 70s and 80s.

The Duece, which will also star Maggie Gyllenhaal, Zoe Kazan, Margarita Levieva and Lawrence Gilliard Jr., will premiere on the network sometime next year.