Afraid of jokes, how to shave your head?

Take a hat, it will grow in a month or two, and then go to the barber shop to have it repaired. If you can't wear a hat, don't. When people ask, they will say that they didn't cut it well at that time. Just have a bald head to cool off, so you don't have to worry about finding reasons. You really don't feel well now. After your first day, it will be nothing if others see it. Actually, it's not as terrible as you think. Or you can talk to your good friends first, and let them prepare themselves in advance, so that they won't be so worried on the day of school.