Well, he already was a bit of a laughingstock. Joe the Plumber, otherwise known as Samuel Wurzelbacher, will hang up his uniform—at least for one night—and grab the mic for some good old-fashioned stand-up comedy. Joe Wurzelbacher will participate in the "Funniest Celebrity in Washington" contest, alongside other conservatives, including Grover Norquist. Joe the Plumber has become a bit of a renaissance man since his brush with fame. He has also dabbled in music, writing, and public speaking. ABC's Sam Donaldson will open the contest with the honorary "First joke," Politico reports.