G-Force

A woman was shopping at her local supermarket, where
she selected a quart of milk, a carton of eggs, juice, and a package of bacon. As she was unloading her items on the conveyer belt to check out, a drunk standing behind her, watched as she placed her items in front of the cashier.
He said, "You must be single."
The woman, a bit startled, but intrigued, looked at her four items on the belt, and seeing nothing particularly unusual about her selections said, "Well, ya know, that's right. But, how
on earth did you know that?"
The drunk said, "Cause you're uglier 'n ****."