Teacher ==> Students: What should not be taken in the mouth?
Student ==> Teacher: Bulb, when it is switched on.
Teacher ==> Student: Why?
Student ==> Teacher: Last night my aunt was saying to my uncle -- "First switch off the bulb then I will take it in my mouth".
Student ==> Teacher: Bulb, when it is switched on.
Teacher ==> Student: Why?
Student ==> Teacher: Last night my aunt was saying to my uncle -- "First switch off the bulb then I will take it in my mouth".