You Must Be Single

A young man went shopping. He bought a small can of corn, a small can of tuna, a small jar of mayo, a small lemon and a very small box of teabags.

When he came to the counter the girl at the cash register smiled at him and said;

"You must be single."

"Why, do you mean because I buy so little food?"

"No, because you're so goddamn ugly..."