SMILE FOR YOU

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 realised, that I'd passed it onto him.
I thought about that smile; then I realised 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.