I Love This Joke

A man and wife are at a table in a plush restaurant. The husband keeps looking over at a drunken woman sitting alone at a nearby table.

Finally the wife asks, "Do you know her?"

"She's my ex-girlfriend," says the husband, "She started drinking right after we split up seven years ago and I hear she hasn't been sober since."

"My goodness!" says the wife, "Who'd think a person would go on celebrating that long?"