Three tortoises, Mick, Andy and Roy, decide to go on a picnic. Mick
packs the picnic basket with beer and sandwiches. The trouble is that
the picnic site is two miles away.
So, it takes them ten days to get there. When they get there Mick
unpacks the food and beer.
"Ok Roy give me the bottle opener"

"I didn't bring it" says Roy "I thought you packed it" Mick gets
worried, He turns to Andy, "Did you bring the bottle opener?"

Naturally Andy didn't bring it.

So they're stuck two miles from home without a bottle opener. Mick and