The Barter System

This is what happens as we get older.

Yesterday morning I bought two cases of beer on sale at the Beer Store.
I placed them on the front seat and headed back home.
 
I stopped at a service station where a drop-dead gorgeous blonde was filling up her car at the next pump.
 
Although it was very cold she was wearing a very short skirt and a light jacket which was wide open.
 
She glanced at the beer, bent over, and knocked on my passenger window.
With her bra-less breasts almost falling out her skimpy top she said, in a sexy voice, "I'm a big believer in barter, old fella.
Would you be interested in trading sex for beer?"

.... I thought for a few seconds and asked,
"What kind of beer 'ya got?"