Regis Philbin Tries to Get Another Kiss out of David Letterman on 'Late Show' (Video)

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One kiss from David Letterman in a week just isn't enough for Regis Philbin.

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The Live With Regis and Kelly co-host, whose last day on the daytime talker is Friday, appeared on CBS' Late Show With David Letterman on Thursday night.

His guest stint came a day after Letterman appeared on Live, during which he planted a kiss on an unsuspecting Philbin.

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"He did my show yesterday and we had a nice, nice show,” Philbin said on Late Show.  “You were very good.  Everybody loved you, but did it have to end like this?  Because here’s what happened: The man got up, the man got up out of his seat, and he was excited.  And we were all excited because you don’t see him anywhere, so the man approached me, and I’m thinking, ‘Where’s he going with this?’  And this is where he went,” Philbin said, holding up a photo of Letterman about to kiss him.  “Look at him, he’s closing in on me. And then suddenly, it was this, thank you very much!” Philbin then held photo of Letterman giving him a full-on kiss. 

“What are we talking about here?” Philbin said.  “On the lips!  On the lips!”  For his part, Letterman said: “I enjoyed every second of it.  I’d do it again in a heartbeat.”

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Later during the interview, Philbin requested another smooch.

“Why not?” Philbin joked. “Why can’t we have one more, one more just for the road?” as the audience cheered. 

Retorted Letterman: “You’re a slut,” Letterman deadpanned. “That’s what you are.”  Responded Philbin: “Well, you’re turning me into a slut."

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Philbin is exiting his role as co-host of Live after 28 years, with a series of guest hosts filling in alongside Kelly Ripa, starting with Jerry Seinfeld on Monday.

The Late Show airs at 11:35 weeknights.