WHY YOU NEVER QUESTION A DRUNK

 I was shopping at the local supermarket where I

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. 
            A package of gum.
           
            As I was unloading my items on the conveyor belt to
check out, a 
            drunk standing behind me watched as I placed the
items in front of the
            cashier. 
             
            While the cashier was ringing up the purchases, the
drunk calmly 
            stated, "You must be single." 
             
            I was a bit startled by this proclamation, but I was
intrigued by 
            the derelict's intuition, since I was indeed single.
I looked at
            the six items on the belt and saw nothing
particularly unusual 
            about my selections that could have tipped off the
drunk to my 
            marital status. 
             
            Curiosity getting the better of me, 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."