AceShowbiz -

Paul Rudd may commit to be all out for his role in "WanderLust", but he probably will not show his asset in front of co-star Jennifer Aniston. According to E! Online, the actor will use a prosthetic penis to film his nude scenes in the film.

"It's so funny," former Hollywood publicist Jonathan Jaxson, who was on the scene in Clarkesville, Ga., says about the fake organ as quoted by the site. "Everyone has been joking about his prosthetic penis."

Aniston is also said to strip down for her role but it has not been known if she will go au naturel. Her character will additionally be seen smoking cannabis and engaging in same-sex romp, reports say.

In related news, Ray Liotta has just been cast in "WanderLust". He joins the line-up which already includes the likes of Malin Akerman, Alan Alda and Justin Theroux, in addition to lead actors Rudd and Aniston.

Directed by David Wain, the comedy will follow a married couple who winds up in a Dixie nudist colony. Production was kicked off in September with Universal Pictures planning to release the movie sometime in 2011.