Where does the term "bat shit crazy" come from?

I know dried guano was used for something, but I can't remember what? Can it carry rabies or a psychoactive agent?

OMG, I have to share this from Carolyn Hax's chat, because it made me laugh out loud:

I was once dating a similar guy, and my very Catholic family was intrigued. He was a carpenter to boot (Jewish carpenter, ha, ha) I brought him home for Christmas, and he declined to go to church, he would feel "uncomfortable." I should have told him to pretend he was an anthropologist. Instead he decided to make a special breakfast for the family while we were at Mass.

Now, I had met him and was living in Alaska, so of course he was a big hunter. He brought special deer sausage in a cooler on the plane to make for my family. Evidently he got pretty hot while cooking, so stripped down to his tank top undershirt.

So, we all troop in from church, and there's my hairy Jewish Alaskan boyfriend in his undershirt. My mom went upstairs to change and said to my sister "WHY is there a Jewish carpenter in his undershirt making REINDEER sausage in my kitchen on CHRISTMAS?"

For various reasons, the relationship didn't last.

Um, whoever he wants, I guess.

Not if you've divided them by size. He's the biggest guy in his races.

A cheetah?

His cheetah.

Guano was an important fertilizer. I don't remember where the crazy comes in.

Not if you've divided them by size. He's the biggest guy in his races.

But that works in my head -- there's not some larger set of people who would be faster than him. Edit: I mean set of larger people.

There was a House that involved a young female model who turned out to be XY. It got all tangled up in either her father, her manager, or her father/manager sleeping with her, and while she was barely of age--making it skeevy, but not illegal--he couldn't cope with the fact that he'd been taking advantage of a "boy" rather than a "girl." Typical twisted House stuff.

He was a father/manager like Joe Simpson, Connie. The real question is, whose birthday did I dump from my brain to make room for that?

This. I may not agree with their lifestyle choices, but they seem happy with their life and don't seem to be judgey of people who don't choose that kind of life.

I'm not sure that's entirely right, since they're apparently part of Quiverfull, where women should be submissive, contraception is like abortion and having lots of children is a tool to obtain demographic superiority. [link]

Have you seen today's xkcd Jess? It made me think of you.

Natural parenting? Yes, it's brilliant.

there's not some larger set of people who would be faster than him

But he's the guy with the size advantage over everyone else. It's not fair for them to have to run against him, if size is the discriminator.

I wonder about genetics in other sports. Cheryl Miller was a better b-ball player than her brother, I swear, and he had a good NBA career.