Conan O'Brien and David Letterman have fun at Jay Leno's expense on 'Late Show'

While the famed late night battles of 2010 are long since past, it's still a fun topic to revisit. And that's just what will happen on Thursday's (May 17) episode of "Late Show with David Letterman" when Conan O'Brien stops by.

The two hosts, both of whom have been burned by Jay Leno in the past, appear not to pull any punches in a promo clip for the show. The segment starts off with O'Brien and Letterman enjoying an awkward silence before Letterman interjects.

"I think the longer we just sit here, the more uncomfortable it will make Jay," Letterman says.

O'Brien responds, "You know Jay's watching right now. You know he's...he's getting a live feed in a satellite truck right now. He's watching every second."

O'Brien's trip to the "Late Show" set is his first in 13 years. The program airs at 11:35 p.m. ET on CBS.