teacher jokes

Teacher: "Define energy."

Johnny: "I don’t remember the complete definition but I remember the last few words."

Teacher: "Ok, say the last few words then."

Johnny: "... and this is called energy."

Teacher: "Hello, students! Can anyone tell me, what does the green dot on a 'Tiger Biscuit Packet' indicate?

After a few seconds of silence, one student replies.

"Hello, ma'am. The green dot means that the Tiger is 'Online'."

Teacher: "What is an OS? And give me an example."

Student: "An OS is a word which can be used instead of saying 'Oh Yes'. For example, do you like ice cream? You can reply, ‘Oh, yes' or 'OS.'

Teacher: "You may sit down now."