There were two lovers.
They have been together for many years eversince childhood.
The two are very happy together.
One day the woman tells a joke to the man.
The man falls silent all of a sudden. He wen't into deep thought.
Soon thereafter, everything went cold between them. The woman never told any more jokes. The man, meanwhile, tend to be silent and introspective most of the time.
Years passed. The couple never regained the passion with each other. Many years passed but they just continued their lives coldly.
Ten years passed.
Twenty.
Thirty.
Forty.
Fifty.
Sixty.
Until they are both 100 years old.
One day, while on On their death bed waiting for their last breath, the man laughs suddenly. He laughs long and hard, tears rolled from his eyes.
The woman asks why.
The man replies,
"I finally got it!"
"Got what?", the woman asked.
"Your joke" the man answered.
Then both of them die laughing.