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 they smiled, I realised I'd passed it on to them.... I thought about my smile then I realised it's worth a single smile like mine could travel right round the earth. If you feel a smile begin don't leave it undetected.. let's start an epidemic- quick and get the world infected.