A woman was shopping at her local supermarket where she selected;

a gal. of milk,

a carton of eggs,

a gal. of orange juice,

a head of lettuce,

a Can of coffee, and

a 1 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.

He said, "you must be single." The woman, a bit startled but intrigued by the derelict's intuition, looked at her six items on the belt.

Seeing nothing particularly unusual about her selections she said,
"Well, you know what, you're absolutely correct. But how on earth did you know that?"
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The drunk replied, "'cause you're f*ckin ugly."