The husband picks up a case of beer and puts it in their trolley.
'What do you think you're doing?' asks the wife.
'They're on sale, it?s only $20 for 24 cans? he replies.
'Put them back, we can't afford them? demands the wife, and so they carry on shopping.
A few aisles further on the woman picks up a $40 jar of face cream and puts it in the trolley.
?What do you think you're doing?' asks the husband.
'It?s my face cream. It makes me look beautiful,' replies the wife.
Her husband retorts: 'So does a case of beer and it?s half the price.'