Jason Voorhees has 2 moms
Check out this shit that bloody disgusting found. This is a article from their site about Pamela Voorhees times 2.
While browsing around on the IMDB page of Warner Bros. upcoming remake of Friday the 13th I noticed something intriguing. On the site they credit Nana Visitor as the actress who plays Pamela Voorhees (Jason's mother who is beheaded in the original) and Kathleen Garrett as "Jason's Mother". We made a few phone calls and learned that there are in fact two people playing Pamela Voorhees, and here's how. Visitor - who was the first cast - stars in the actual film at Ms. Voorhees, while Garrett shared her voice as Jason's anger-filled mama in the full trailer that's been online the past few months. Hope that clears the air. You can see Visitor in action when FRIDAY hits theaters February 13th, 2009.
Credit: Bloody Disgusting