Ask the teacher for leave.

Ask the teacher for leave. What do you mean by earache?

Teacher, I want to ask for leave. Don't be angry yet. Listen to me. I went to my grandmother's house yesterday. His home is in the countryside. When I was sleeping at night. A bug flew into my ear and couldn't get out. Grandma said, just drop some oil into it, and then the bugs came out. But my ears are always dripping with butter. Teacher, can I ask for leave to go out and have a check? You can say there are bugs in the school. You can decide the place, time and people by yourself. If the teacher checks, don't forget to put on some butter.

You can also say that your ears have been buzzing. I hope I can help you!