"Laughter is the best medicine" means that finding humor and having a positive outlook can improve your mood and well-being, similar to how medicine improves physical health.
The origin of "laughter is the best medicine" is the Bible, Proverbs 17:22 "A merry heart doeth good like medicine: but a broken spirit drieth the bones".
- From Google with editing
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Robert Browning (1812 – 1889), an English poet and playwright, once said: “Without love, our earth is a tomb".
I would like to add: Without humor, our world will be bored to death!
So, my friends, it's about the time to have a round of fun riddles 
- What two things can you never eat for breakfast?
Answer: Lunch and dinner.
- What grows when you feed it but dies when you water it?
Answer: A fire.
- What’s always on the ground but is never dirty.
Answer: A shadow.
- What can fill a room but takes up no space?
Answer: Light.
As usual, the last one is from 西島:
- What's the most beautiful clothes in the world?
Answer: A birthday suit 
Here are two pics to prove my point:
1. See how beautiful Maowi is in his birthday suit? He knows that so well that he refuses to wear anything else 
2. A drawing I did in a class with a live model. IMHO, women's body curves (ie birthday suit) is a beautiful piece of art created by "God" (note: two hours was too short for me to finish the drawing, so the lady has to sit on the air )
