An angry woman with two kids enters Walmart, shouting angrily at the children and at anyone who crosses her path.
The greeter at the reception says cheerfully to her: "Good morning and welcome to Walmart."
"Shut the F up." Grunts the woman.
Unperturbed, he says: "Cute kids! Are they twins?"
The horrible woman stopped shouting just enough to say, "Hell, they’re not twins! The older is 9 and the other is 7! Are you blind or just stupid?"
"Neither. It's just hard to believe someone slept with you twice."