b3ta asked that question, and got some damn funny answers. One of my favorites is one of the first ones listed, though there are a ton of them:
My cat once ate a 6 foot-long piece of red and green string, which it couldn’t completely crap out. There i was, sitting in my living room, and my cat comes running through with about 5 feet of it trailing from its ass.
Considering it was around Christmas, she looked rather festive.