"Our topic for today is photosynthesis," began the professor. She looks at the class, points to John and asks, "What is photosynthesis?"
John replies, "Photosynthesis is our topic today!"
Husband: "I want to tattoo your name on me. What do you think, shall I do it on my arm or neck?"
Wife: "How about on your will?"
The Law of Equality states:
The time taken by a wife when she says "I'll be ready in 5 minutes" is exactly equal to the to the time taken by husband when he says "I'll call you in 5 mins."