Cashier: Sorry to have kept you, what can I get you?
Dave Briggs: Erm, I'll have six of these please.
[Briggs puts six cans of lager on the counter]
Cashier: Oh, you do know that with every three you buy of those, you get one free?
Dave Briggs: Really?
Bob Louis: So, we've got six, but we get two more free?
Cashier: That's right.
Dave Briggs: Go on then, Bob.
[Louis puts two more cans on the counter]
Bob Louis: Hang on Dave. We've got eight cans, right?
Dave Briggs: Yeah.
Bob Louis: If we buy another one, we can get three free.
Dave Briggs: That's true.
[Louis puts four more cans on the counter]
Dave Briggs: Erm, we'll have nine cans please, miss.
Bob Louis: And these three are free.
Bob Louis: Great this, innit?
Dave Briggs: Hang on, we've got twelve cans, right? Well threes into twelve goes four. We should have four free ones.
Cashier: So, you want to pay for twelve, and have four free?
Bob Louis: Well, if they're free, yeah.
[Briggs puts four more cans on the counter]
Dave Briggs: [Briggs pulls Louis off to the side and asks quietly] How many do you make it now?
Bob Louis: Sixteen.
Dave Briggs: If we buy two more, we get six free ones.
Bob Louis: We only came in for six.
Dave Briggs: We've got 'em for nothing.
Bob Louis: Hey, with the money we've saved, we can buy six more.
Dave Briggs: Blimey, you're a genius... Excuse me miss.
[Louis puts six more cans on the counter]
Bob Louis: [after leaving the store] Dave, what I can't work out is if we've just saved so much money, why is it I've only got 78 pence to see me through the rest of Christmas?
Dave Briggs: It's called Supply Side Economics, trickle down, it's all to do with the EMU.
Bob Louis: Still, it is Christmas.
Dave Briggs: Yeah. Hey, and what do you need money for anyway? We've got everything we need for the next week here in our hands.
Bob Louis: Bird with one leg, seventy six cans of lager.
Dave Briggs: All I need now to make my Christmas complete, would be World Peace, and an electric screwdriver.