Los Angeles: Actor Liam Hemsworth has revealed that his mother was his sex education teacher. The "Independence Day: Resurgence" star said he "learnt a lot" from her, reports femalefirst.co.uk. Speaking on The Graham Norton Show, he said: "I had my mother for personal education and sex education. Learnt a lot, learnt a lot. A wise woman. "The first class we had together she handed out these cards out to everyone that had some form of sexually-transmitted disease (STD) and for whatever reason, she felt the need to pick me first and stand up. She said, 'Liam, what do you have?' 'Well mom, I have chlamydia'."