I've always liked black licorice. I was at Walmart once, saw a big bag of black jellybeans, impulse bought them and went to fucking town on them.
That night, my poo was green. Not the usual swampy-browny-greeny color of green poo, but fucking crayola forest green.
The next day, my poo was an even more vibrant shade of green. And there was a cloud of green dye in the toilet bowl, with darker tendrils of green dye wafting off the poo logs.
I still like black licorice, but it sure as hell put me off Walmart store brand candy.