By MB Shore

Screenwriter and film director James Gunn released the second episode of his web humor series PG Porn on Sunday evening. Entitled “Roadside Ass-sistance,” the video is the second in a series of shorts that Gunn designed for “people who like everything about porn…except the sex.”

Gunn is the writer of the Scooby Doo film series, as well as the 2004 remake of George Romero’s Dawn of the Dead. He is also the writer/director of the Nathan Fillion and Elizabeth Banks horror-comedy vehicle Slither.

Working in association with Spike.com, Gunn’s PG Porn series features a different celebrity and porn star combination in each episode. The characters find themselves in typical porn movie situations, but just as things are about to turn sexual something goes horribly wrong.

The latest episode, “Roadside Ass-sistance” features writer / director James Gunn himself, alongside popular porn actress Sasha Grey. When Grey’s car breaks down, Gunn offers to use his “tool” to repair it, with hilarious results. (Careful: While there is no nudity, the video is still slightly NSFW.)

Check it out right here after the jump.

Spike.com will present ten more episodes of PG Porn in the months to come. Visit James Gunn’s Myspace for more information.

The first episode, starring Nathan Fillion (Firefly, Dr. Horrible’s Sing-a-Blog) and Aria Giovanni has recorded over 1.6 million views.