They AREN’T Twins?!

A very mean, nasty, unattractive woman enters the Wal-Mart store with her two kids. The Wal-Mart greeter says hello to the kids and then hello to the lady who just grunts at the greeter in return. The greeter asks the lady, “Great kids! Are they twins?”
“No,” replies the lady, “one is 9 the other is 7. Do they look like twins?”
“No,” the greeter says, “I just couldn’t believe you could get laid twice.”