Ever wonder what 17 Again hunk Zac Efron was like in high school?

The 21-year-old actor recently dished to Family Circle magazine about getting in trouble, being the class clown and brawling with his younger brother, Dylan. Check it:

On his high-school days: “I was average. I had a lot of friends, but I was not in that ultracool circle. I was a bit of a class clown — I guess to get through the tedium of the quadratic formula! I thought everyone was fair game.”

On what he loves about his parents, Starla and David: “I’ve always appreciated my mom’s ability to listen to me. Even today I can vent my frustration or share my happiness because she made it clear long ago that she wanted to hear what I had to say. I’m thankful to have had that, because between self-discovery and the social hierarchy, high school can be the most confusing time of your life.”

On arguing with his parents: “Oh man, it seemed like every weekend I was in trouble for something! Our disagreements were over small things like curfew. If I got home late, I would get chewed out…I fought a lot with my little brother [Dylan]. We were brawlers and I would always get grounded. If I had big plans with friends for the weekend—camping or boating or surfing at the beach—I wasn’t allowed to go.”