Last night, I was walking from office to bedroom when she attacked my
foot.  I screamed so loudly that DH came running, worried I'd
seriously injured myself.  This morning, I see three slashes on my
foot.  Last night I only remember a pinprick.

Then this morning, she came to me, purring and headbutting for more pets
whenever I stopped.  Then all of a sudden she bit me (lightly, no marks)
and backed off.  Of course, I was half asleep, so when she stopped
purring, I saw the hyper-alert look in her eyes, but wasn't conscious
enough yet to stop myself from doing something stupid.  I just put my
hand in front of her, to see if she wanted to approach me ... and she
yowled and grabbed my hand.  I have at least four scratches and several
pinpricks on my hand.

Stupid cat.  I told her she's lucky if she gets fed, but of course
I'll feed her.

I guess I should count my blessings; it's been so long since she went
nuts that I forgot she has a history of doing so.  And she doesn't dig
deep; the scratches are all superficial.  But still.  It's just plain
rude.  Bite the hand that feeds you, indeed.