An idea to uphold!

Gopal used to spend a lot
With the pocket money he got
Although his father not to spend thought
Since to earn money it takes a lot.

Gopal loved to got to Mall
With his friends to have a ball
He enjoyed their company
And would spend each penny.

One day his father asked Gopal
“Ever thought of doubling the money I gave?”
An idea splashed Gopal like a tidal wave
“Sure” he replied and folded the note into two folds!