Blame Teri Hatcher. Or the floor-buffing guy.
Either way, viewers got a video replay and firsthand account of the Tonight Show bit that bit back at Conan O'Brien Friday, causing the host to cancel the taping midway through and take up an afternoon residency at Cedars-Sinai Medical Center.
"I've been bombarded with emails and calls and people wondering just what the hell happened on Friday," O'Brien said.
"When you smack your head on cement, it tends to elicit that kind of interest," cohort Andy Richter replied.
The injury—which briefly rendered O'Brien's otherwise razor-sharp verbal abilities slurred and the entire incident, in his mind, blurred—occurred at the tail end of a bit in which Hatcher had the "great idea" to stage a mock triathlon against O'Brien, which should've ended with both stars crossing the finish line in the studio.
Nonspoiler alert: It didn't.
"I raced down the stairs. I think I was trying to take a slide—it's a very slick floor—and my feet go out from under me and just…actually, I don't remember much," O'Brien said. "I'm not even kidding."