06/21/2012 05:30 am ET Updated Aug 21, 2012

Andy Samberg And Jay Leno Kiss On 'The Tonight Show' (VIDEO)

Recently departed "Saturday Night Live" castmember Andy Samberg certainly got some attention during his Class Day speech at Harvard last month. He had the students cracking up with a bit where he planted an emotional kiss on one male student. After talking about it on "The Tonight Show" (Weeknights, 11:35 p.m. ET on NBC) with Jay Leno, things suddenly got intense.

With the music swelling behind them, Leno and Samberg recreated -- sort of -- that passionate kiss. It turned out to be just as well-received -- and hilarious -- on "The Tonight Show" set as it was at Harvard. Turns out straight man-on-man kissing out of the blue is funny anywhere and at any time. Plus, it's kind of a signature move for Samberg.

Leno's next guest, "Family Guy" creator Seth MacFarlane, wasn't having any of it. He made it very clear when he came out.

"I'm not going to kiss you," he said, before he even finished sitting down.

Andy Samberg can be seen in "That's My Boy," in theaters now. "The Tonight Show" airs weeknights at 11:35 p.m. ET on NBC.

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