Lena Dunham isn't afraid to open up about her revealing sex scenes on Girls, the new Judd Apatow-produced HBO show she writes, directs, and stars in. And she didn't hold back last night when she chatted with Chelsea Handler about her show. Even Chelsea, who's usually pretty shameless, tried to find a polite way to describe the "toochy" or "rear-end" sex that occurs in the premiere episode. Something that Lena explained was quite uncomfortable, adding, "I'm being poked by somebody's weird penis in a bag." She also admits that she's naked so much on set, her bare body parts have no effect on the crew. Watch two of our favorite funny ladies chat about sex scenes and nudity now!