There was a woman shopping at the local supermarket where she selected:

A half-gallon of 2% milk.
A carton of eggs.
A quart of orange juice.
A head of lettuce.
A 2 lb. Can of coffee.
A 1 lb. Package of bacon

As she was unloading her items on the conveyor belt to check out, a drunk
standing behind her, watched as she placed the items in front of the cashier.
While the cashier was ringing up the purchases, the drunk calmly stated,
"You must be single."

She seemed a bit startled by this proclamation, but was intrigued by the drunk's
intuition, since she indeed had never found Mr. Right yet.

She looked at the six items she was purchasing and saw nothing particularly
unusual about her selections, that could have tipped off the drunk to her
marital status.

Curiosity getting the better of her, she said, "Yes, you are correct. But how
on earth did you know that?"

The drunk replied, "Cause you're ugly!"