Ok, the Truth is. . .
I spend so much of my professional, and even personal life, trying to find just the most tactful, least offensive, properly assertive, but not overbearing, way of saying things, that I frequently think I can just fire off whatever pops into my head towards my good friends and the people who love me the most.
It doesn't mean what you said wasn't thoroughly obnoxious, and it DID hurt my feelings, and it DID contribute to my stress. And I'm still a little too irritated to thoroughly apologize. And because I think you probably deserve a genuine, sincere, Miss Have You-wrote-the-book-on-gracious-apologies, apology, you're just going to have to wait. I'm sorry I can't be more gracious more quickly this time, but trust me, you're not going to want to talk to me until at least about Thursday.
You're still one of my best friends, and I do love you, even when I'm a bitch.
[Oh, and tell the girlfriend I got the message she left me. She'll know which one I'm talking about. That was sneaky.]