Should I feel bad about this?

Your Open Question: Why did this happen to me? I'm a senior in high school and I was getting on te bus. This security guard was checking bus passes and we had numbers but even though I knew I had to wait I really had to pee so I wanted to get home quick. This security guard saw my pass and he said that I can go on but next time I had to wait. I said ok and got on. The next thing I knew he called me and in front of everybody yelled at me not to roll my eyes at him! I didn't know what he was talking about because I for sure DID NOT roll my eyes! it was so embarrassing I almost cried. This guy also has a reputation at our school for being an asshole to the students. I think it's either that or he needs new glasses. Why do you think he acted like that? Could it be possible that I unintentionally rolled my eyes or I made it look that way without realizing? What would you do if you were me?