David Letterman may have another opportunity to finally best former late night rival Jay Leno, assuming the prominent-chinned comedian is heading back to his old 'Tonight Show' digs. This week on 'The Late Show' with David Letterman, the tempestuous CBS host continues to poke fun at the late night debacle at NBC with one jab after the next for Jay Leno.

”Lord knows I got my own problems, really, I got my own problems…. but I just can’t help myself,” Letterman said of his relentless commentary on the Conan O'Brien 'Tonight Show' implosion.

“[Jay] said that we should not blame Conan for what’s going on…. And I said to myself, No one is blaming Conan,” remarked David Letterman on Tuesday's Late Show.

Letterman also served up some helpful "advice" to anyone who may be replaced on the 'Tonight Show.'

”You call ABC, you call Fox, you try to get my job, you leave. You don’t [Leno impersonation] ‘Yeah, okay, but I’ll be in the lobby, you know, if you need me.’ You don’t hang around. You go across the street and you punish NBC and you make them eat your words…. Then Conan has a job, Jay has a job, I have a job, what’s his name, Lonnie Donegan, what’s his name, Jimmy Fallon has a job…. And Jimmy Kimmel has a job. See, that’s the way these things are supposed to work. It’s just part of evolution…. It’s an early Darwinian precept: You get fired, get another gig. Don’t hang around waitin’ for somebody to drop dead…. Well, I feel I’ve gone too far yet again tonight.”

Image via CBS