A 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 and then
I realized its worth.
A single smile, just like mine
could travel round the earth
So, if you feel a smile begain,
don't leave it undetected.
Let's start an epidemic quick,
and get the world infected!