Smile :-)

Smiling is infectious,

you catch it like flu.

When someone smiled at me today,

I started smiling too.

I passed around the corner,

and someone saw my grin,

When he smiled, I realized, I'd passed it on to him.

I thought about that smile, I realized its worth.

A single smile, just like mine, could travel round the earth.

So if you feel a smile, begin, don't leave it undetected,

Let's start an epidemic, quick, and get the world infected!