After class, a boy is arguing with me about how to unbutton the back of my bra. It’s so embarrassing. What should I do if it’s not convenient to fix it after unbuttoning it?

This is an awkward situation, but there are things you can do about it.

First of all, you can try to talk to the boy. Tell him how you feel, let him know you don't like his behavior, and hope he can respect your privacy and feelings. If he can understand your thoughts and change his behavior, the problem will be solved.

If talking doesn't work, you might consider asking a teacher or school counselor for help. They can take appropriate steps to protect your rights and help you resolve the issue.

In addition, you can try to avoid contact with the boy during recess, or find other students to act together, so as to reduce the chance of being harassed.

The most important thing is, don’t let this affect your emotions and studies. Remember, you have the right to protect your privacy and feelings, and do not make yourself feel embarrassed or upset by the actions of others.