Miley Cyrus' ex-fiance Liam Hemsworth, like any adolescent, learned about the facts of life from his mother. Big deal, right? The catch(ing fire) is that his mom was the sex ed teacher at his school, so he learned about the birds and bees in a very public forum. Yikes!

While sitting down for a chat on 'Live! With Kelly and Michael,' the hunky Aussie actor, promoting 'The Hunger Games,' revealed that "I was in her class – I would come in for the first part of it and leave half way through." When co-host Michael Strahan mentioned the awkwardness of parent-as-teacher, he didn't even know he half of it.

Hemsworth revealed his mother was the sexual education instructor, saying, "You have your mom talk about sexual stuff, it's not a class I'd like to be in."

Hemsworth was embarrassed by the situation and used "to put my head down most of the time."

Seriously, he had reason to.

He recalled, "We had this one time where we were given out cards of different sexually transmitted infections and you had to stand up and talk about the card and she picked me out of the whole room. It was like, 'Well, I have chlamydia … thanks for this, Mom. Good class.'"

Too cute!