On Tuesday night's Late Show, the program's host moved a bit closer to the Parks and Recreation star just as he was about to roll a clip from Poehler's sitcom.
"Oh, I thought you were going to go in for a kiss," the comic actress remarked.
Then, without missing a beat, Letterman proceeded to grab Poehler by the arm and plant a wet one on her.
After both exchanged thank-yous, the veteran talk show host said, "Tell that to your little buddies back there at NBC."
Your move, Leno.