If there’s one thing Chelsea Handler knows, it’s how to get someone’s attention. Before finding success as an author and late night host of E!’s ‘Chelsea Lately,’ Handler starred in a homemade sex tape that she claims is a joke. The graphic tape, obtained by RadarOnline.com, was made over a decade ago after Handler moved to Los Angeles. The video is said to begin with Handler wearing a work uniform and introducing herself to the camera by name before launching into a stand-up routine. The tape abruptly cuts to a scene in which Handler and a male companion with a British accent are engaging in an explicit sex act, according to Radar. Handler, 35, took matters into her own hands on her talk show on April 28 by addressing the ‘sexy time tape’ she made when she was 23. According to the site, Handler sent the video tapes to Hollywood agents as a demo tape when she was looking for work.’I would like to say to Radar Online, thanks for ruining my surprise Christmas gift to my staff,’ Handler joked. ‘Number two, it was made as a joke. I put it on an audition tape for a comedy club, because I’m a comedienne, and I’ve been showing it at birthday parties for f—ing years!’Even Chelsea’s rumored ex-boyfriend has been involved in a sexy scandal …