A woman was at the checkout line at the grocery store...

She started to unload her basket. 6 items were all that she was getting. Some feminine products, some snacks, and some tanning oil. A man, visibly drunk walks up and stands behind her in line. He puts a case of beer and a bottle of whiskey on the conveyor. She notices the man looking at her and turns to him. He looks down and takes a look at the items she is buying. As he looks at them, he says "you must be single!" She gets confused and looks at her items. She thinks "wow this must be some kind of trick or something. How could he gather that from what I'm buying? This guy is pretty good". Playing along, she looks back at the drunk and says, "well, you are correct. But how on Earth did you gather that?" He says, "Well, because you're fuckin ugly"

EDIT: Yes different areas of different places have different laws about alcohol sales. Its just a joke everyone. This is definitely feasible in most places.