A Coffee joke

When does a coffee bean know when it has a cold?

It coughs.   he he he

I'm trying to be more environmentally friendly these days. I just go around my local park complimenting the trees. 

At school, I got caned when in Geography; it must have been about N America I was asked what a bison was? My cheeky reply it's what my mum puts on my head when she cuts my hair. (basin)