Howard said he'd thought about it over the weekend and decided not to appear on 'The Tonight Show' before Conan leaves: "No. The answer is no. And I'll tell you why. Because I'm lazy."
For Howard, the big hurdle was traveling: "I just don't want to go out to LA. Just to fly 6 hours and get all set up?"
Howard added that he almost said yes – when Rosie O'Donnell proposed they go on together: "That really got me going creatively...it [was] gonna be one big 'Scumbag Jay' party."