Because it's undefined.
Son: I couldn't find a spider.
He found his pair a' dice!
On Yahoo Answers. Stand by while the internet divides itself by zero.
I like your belt. Ok, ok. I know it's elementary, but I still love it.
A roamin' numeral.
Nice belt.
Because somebody divided 14 into 2 and he was the prime suspect
She counts the legs, and divides by 4.
In the dictionary.
Because people keep hitting them with dictionaries.