Teacher: What is a verb?
Student: A verb is a valve found in bicycle tyre.
Teacher: What are you saying?.
Student: It is a complete sentence.
Teacher: Are you mad?.
Student: It is a question.
Teacher: Don't be silly.
Student: It is an advice.
Teacher: Stop that nonsense.
Student: It is a command.
Teacher: You are an idiot.
Student: It is an insult!.
Teacher: Get out of my class.
Student: It is an order!
Teacher: Oh my God! What a shame!
Student: It is an exclamation.
Teacher: May God have mercy on you.
Student: It is a prayer sir! :
hahahaha 
that excellent joke... 
.gud joke
great joke 
nyc joke