The trouble is the picnic site is ten miles away so it takes them ten days to get there.
When they get there Mick unpacks the food and beer. “Ok Les Give me the bottle opener.”
“I didn’t bring it,” says Les. “I thought you packed it.”
Mick gets worried, He turns to Alan, “Did you bring the bottle opener??”
Naturally Alan didn’t bring it.
So they’re stuck ten miles from home without a bottle opener.
Mick and Alan beg Les to go back for it, but he refuses as he believes they will eat all the sandwiches while he is gone.
After two hours, and after they have sworn on their tortoise lives that they will not eat the sandwiches, he finally agrees.
Les then starts moving steadily down the road.
He hasn’t returned after twenty days.
A promise is a promise, even though Mick and Alan are now starving.
He hasn’t returned after five more days, but a promise is a promise.
When they finally have enough, they each order a sandwich, but before they can finish it, Les appears behind a boulder and yells,
“I knew! I refuse to go!