When Zac Efron hit the orange carpet for the premiere of “The Lorax” earlier this week, he may have had more on his mind than just promoting the film.

There’s a video that hit the Internet supposedly showing a condom accidentally falling out of Zac’s pocket.

Here’s the play-by-play:  Zac reaches into his pants pocket and pulls something out, which he hands to his publicist to hold for him.  But as he pulls his hand out, something that looks like a condom in a gold wrapper falls out.

Zac immediately reaches down to pick it up . . . and he looks like he’s both embarrassed and trying not to laugh.

Whoever uploaded the video to YouTube claims that Zac mouthed “Oh my God” to his publicist . . . but it’s hard to tell from the video quality.

They also claim the paparazzi were, “laughing their heads off.”  But we can’t verify that.