Ask for English jokes. Simple ... it must be funny.

Father: Well, Tom, I talked to your teacher today, and now I want to ask you a question. Who is the laziest person in your class?

Tom: I don't know, Dad.

Father: Oh, yes, you do! Think about it! When other boys and girls are doing and writing, who sits in the class and only watches how others work?

Tom: Our teacher, Dad.

Father: Hey, Tom, I talked to your teacher today, and now I want to ask you a question. Who is the laziest in your class?

Tom: I don't know, Dad.

Father: Oh, no, you know! Think about it, when other children are doing their homework and writing, who sits in class and just watches others do their homework?

Tom: Our teacher, Dad.