A woman was 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 romaine lettuce,
A 2 lb. can of coffee, and
A 1 lb. package of bacon.

As she was unloading my 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 was a bit startled by this proclamation, but was intrigued by
the derelict's intuition, since she was indeed single. She looked at the
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, I said: "Well, you know what,
you're absolutely right. But how on earth did you know that?"

The drunk replied, "Cause you're ugly.