I thought it was coincidence, but further experimentation has shown the truth.
I need B-12. Require it, much as an automobile requires gasoline (or some other power source) to go.
I require vast quantities of B-12, daily, or I become a bitter, cranky shrew that gets irritated at nothing and tears people's heads off for no good reason. I do not like the person I am when I forget a day.
I am that person today, because I forgot yesterday.
So while I had planned to blog about how awesome Kathleen's visit was and how much I lurve her and how yesterday I got my cat altered to suit my needs and I'm feeling really really really guilty today ... Instead I'm going to go take some B-12 and not talk to anyone for the next 18 hours.
blar.