Not true. Go watch a few Daniel Tosh standup specials.

Edit: I'm willing to bet that all of you downvoting me have only ever seen him on Tosh.0.

Edit2: http://www.youtube.com/watch?v=WTxnrzo7RdY&amp;feature=related

http://www.youtube.com/watch?v=GJvCR3Ww6i4