Zac Efron's broken jaw wired shut after crazy sex accident, 'That Awkward Moment' co-stars Miles Teller and Michael B. Jordan humorously reveal [VIDEO]

Back in November, Hollywood heartthrob Zac Efron broke his jaw after slipping in a puddle of water. His mouth's been wired shut ever since. But according to Efron's "That Awkward Moment" co-stars Miles Teller and Michael B. Jordan, the story behind the actor's broken jaw is a lot more bizarre than that.

So, here's what REALLY happened:

Teller and Jordan cut-in on each other throughout the humorous story, explaining:

"Zac was at home with a girl, giving her the worst sexual experience of her life - absolute worst. But she was getting into it, until she realized that you were finished, so early. And this poor girl's pent up sexual energy, which you failed to satisfy, made her angry. So she picked up a book, a heavy book, and slammed it into your beautiful face."

"Case closed," the duo reveal while giving high-fives.

Meanwhile, Efron's stuck sitting there the entire time, unable to say a word. He looks like he's about to burst by the end of the interview.

It's great.

"That Awkward Moment" hits theaters January 31, 2014: