It was somewhat reminiscent of the old Ed Ames - Johnny Carson tomahawk throw, which occurred when Ames, who portrayed the Native American Mingo on the show "Daniel Boone," showed off his tomahawk throwing prowess, with the weapon ending up in a human-shaped target's crotch.
In this case, Nina Dobrev was showing off her yoga moves, and in one position, her feet ended up smack dab in Conan O'Brien's crotch. "Best job in the world!" O'Brien then shouted.
Watch the video below, and see Nina Dobrev give Conan a "foot job."