Never ask a drunk

 A woman was shopping at her local supermarket, where she selected:

A half-gallon of 2% milk,
A carton of eggs,
A quart of orange juice,
A head of romaine lettuce,
A 2 lb. can of coffee,
A and 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 her purchases, the drunk calmly
stated, "You must be single."

The woman was a bit startled by this proclamation, but she was 
intrigued by the derelict's intuition, since she was indeed single. She
looked at her six items on the belt 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 "Well, you know
what, you're absolutely correct, but how on earth did you know that?"

The drunk replied, "'Cause you're ugly.”