A very loud, unattractive, mean-acting woman walks into Wal-Mart
with her two kids in tow, screaming obscenities at them all the way
through the entrance. She's dressed in dirty jeans, a greasy t-shirt with
holes in it and wearing flip-flops exposing her cracked and filthy
toenails. When she yells at the kids, she exposes her yellowed, crooked
teeth with more than a few missing.

The Wal-Mart Greeter says, "Good morning and welcome to Wal-Mart.
Nice children you've got there. Are they twins?"

The ugly woman stops screaming long enough to say, "Hell no they
ain't! The oldest one, he's 9 and the younger one, she's 7. Why
the Hell would you think they're twins? Do you really think they look
alike?"

"No", replies the greeter,
"I just couldn't believe someone had sex with you twice.