Yeah, I had no idea it could do that, either. Look!

(click through for more photos)
This was the aloe vera plant that I found dumped - pot and all - in the recycling bin after we moved in almost three years ago now.
I felt sorry for it, so I pulled it out and stuck it in the backyard, where I didn't quite feel sorry enough for it to do anything with it. It would go brown and limp, and then there would be rain, and it would go green and upright, and then go brown again. As
samvara said once: 'We're teaching it not to trust'.
Eventually, I repotted it in the pot you see in the photo, and it burst forth with life, promptly making itself very at home in the new pot with its potting mix and stuff.
Then last night
samvara was watering the various plants we have out the back, and called me out going "come check this out!"
The internet has
this to say about aloe vera plants.