Careful examination revealed that I had made a mistake in setting up the ribbing, and had faithfully knitted the entire tank with a ribbing pattern completely generated by my imagination. It's whacked.
That made me laugh, and reminded me of something that I did Saturday night, but forgot to mention. I was happily knitting along on my little tarot card bag, watching a movie ("Down With Love," as I recall), when I looked down and realized that I had spontaneously started to do 2x2 ribbing right in the middle of the stockinette part.
Why? No clue. I'm just knitting along in stockinette (but in the round, so knitting every row, I don't even have the excuse of purling to explain it), and I just suddenly start to do ribbing for absolutely no reason. It certainly wasn't a good enough movie to be that distracting . . .
Yarn Harlot: Moron alert