What can I do to get out of an embarrasing situation at school?

At school a hypnotist came on Friday for a little fun thing for the people to watch. Halfway through the presentation, I was used as a volunteer and the guy hypnotized me and told me to do something I like to do every day. I then was pretending to be . I didn't fully realize what I did until I was unhypnotized and I heard some kids laughing at me and making jokes. Today and Monday were already really bad for me because of it. How can I stop all this? Serious answers only please.