What is 'Pain'?

Somebody asked me, 
What is pain? 
Is it a feeling?
Or what?

I asked, 
Have you ever touched fire? 

Got a reply,
Never! who would like to be fool and hurt themselves?

I then said, 
That's what pain is like! 
It hurts you! 
It hurts you from inside, making your outside painful as well! 
The pain of 'pain' couldn't be measured!

And I also advised,
World will always be ready to give you 'pain',
But you have to remain strong!