*Will Smith spoke for the first time about his headline-making smack of a male reporter who tried to kiss him during the “Men in Black 3″ premiere in Moscow.

The actor laughed off the encounter during his visit to “Late Show With David Letterman” on Tuesday, but warned that he’s not trying to entertain random make-out sessions with strangers on red carpets. [Scroll down to watch.]

“I didn’t beat up a guy! No, no. I was in Moscow and … we’re doing an interview and he says, ‘Man …,’ he was a reporter and he says, ‘I’m your biggest fan, can I have a hug, please?’ ” he told Letterman. “So I go to give this joker a hug and he tries to lean in to kiss me, you know? And … it’s just awkward, Dave.”

The reporter was from a Ukrainian program called “1+1.” After the slap, show’s crew tried to smooth things out with Smith. He told Letterman, “They were [like] ‘We’re sorry, you know, it’s just his shtick.’ and I said, ‘That’s why his ass got shtuck.’ ”

“Men in Black 3” opens on May 25.