So I'm hoping someone with a little more knowledge than me can explain the phenomenon happening in my laundry room.
A little background...
A couple of months ago, I was given some amaryllis bulbs in a Target bag. Seeing as how it was still winter and I didn't intend to plant them for awhile, I hung the bag on a door knob in the laundry room with the intention of taking them to the garage at a later time to await planting season. Long story short, they never made it to the garage, and so they hung on the door in the laundry room.
About a week and a half ago, I was all loaded up, as I often am, with bags and boys (hence the reason the bulbs never made it to the garage), and headed to the van. I reached for the door knob to go out to the garage, and, startled, withdrew my hand and let out a slight gasp. Peaking out of the bag was a thick green stalk with an unopened flower head at the top.
Now, let me just take a moment to say how startling it was to find something living coming out of a bag in a place where I never would have expected to find something living. Maybe it's just me, but somehow it was so creepy, that for a split second, it could have been anything coming out of that bag, a human hand, for example, and my reaction would have been the same.
When I gathered my composure and realized it wasn't the boogie man coming to get me, I stood for a moment, puzzled. "What on earth?" I thought. How is it possible that one of the bulbs has sprouted in a plastic bag with no soil, no sunlight, and no water? Not having time to examine it then, we went out to the van and on our way. Later though, I came back to look again and took a picture.

Amazed, I decided to leave it there and see if it would bloom. Sure enough, here's how it looks today...

And in the bag, there are several more coming up.

Now, will someone please enlighten me on how this is possible? No water, no sunlight, no soil. Weird. I'm going to plant them in my garden soon. I just hope they like the outdoors as much as they like my laundry room!