A man walks into a supermarket and buys:
1 bar of soap
1 toothbrush
1 tube of toothpaste
1 loaf of bread
1 pint of milk
1 single serving cereal
1 single serving frozen dinner
The girl at the checkout looks at him and says "Single, are you?"
The man replies very sarcastically "How did you guess?"
She replies "because you're ugly."