What jokes can only be understood by you?

1. Will the electric eel be electrocuted by the electric eel or will it be electrocuted by the electric eel?

She obviously likes him, but she just doesn't say it.

The headmaster said: There is nothing on the school uniform except the school badge. Please don't do anything else!

I have a very clean notebook.

5, as long as people are nice, ok, ok, ok, ok. If not, do a line, do a line, do a line, do a line, do a line.

6. Play a tune, a tune, a tune, a tune, no tune, no tune.

7. Coming to the place where Yang Guo once lived, the little dragon girl said emotionally, "I also want to live a life."