Checkout chat up

A girl walks into a supermarket and buys the following:

1 bar of soap

1 toothbrush

1 tube of toothpaste

1 loaf of bread

1 pint of milk

1 single serving of cereal

1 single frozen dinner

The checkout guy looks at her, smiles, and says, “Single, huh?”

The girl smiles sheepishly and replies, “How’d you guess?”

He says, “Because you’re ugly.”