Three men walk into a bar...

Each are carrying a folded plastic bag
one is from John Lewis
one is so tightly folded I can't see where it's from
the third is a loosely folded orange bag from Sainsbury's

One of the men says:
"Are we on tonight then gents?"
"Yes, it's us tonight."
They order a round of drinks.
"Are we ready then gentlemen?"
And they all head off into a back room somewhere.

A couple of minutes later, another group of men
arrive wearing various items of white - shirts, trousers, caps, jumpers, jackets
but nothing matches
they order pints and stay in the bar discussing
last night's match and their more recent
game of bowls

they are totally unaware that in another room
three men are 'on'.