It was a practical session in the psychology class.
The professor showed a large cage with a male rat in it. The rat was in the middle of the cage.
Then, the professor put a piece of cake on one side and a female rat on the other side.
The male rat ran towards the cake and ate it.
Then, the professor changed the cake and replaced it with some bread.
The male rat ran towards the bread and ate it.
This experiment went on with the professor changing the food each time.
And each time, the male rat ran towards the food item and never towards the female rat.
The professor said, “This experiment shows that food has the greatest attraction.”
Then, one of the students from the back rows said, “Sir, why don’t you change the female rat? This one may be his wife!”
The professor stood straight up, shook his head as he pointed at the student and said, “You get an A.”