smile

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!