Smiling is infectious,
you catch it like the 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,
then 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!

Author Unknown