Now normally I don't do off-the-cuff-smart-@zz, but I have heard a variation of this BS so many times that I actually have a canned response prepared.
But before I say it, let's examine this interaction. Now, nowhere but in Way-stupidity-brain-land are you ever going to find a statement like this where someone can go from zero to j@ck@zz in 0.5 seconds. This is classic "way brain" going on here. The poor girl probably thought to herself "I'm looking for an opportunity to minister to someone". However, reality is much different. She is calling with the pretense of wishing you a happy birthday, but the real habit is to troll for some response to reprove. This is also classic "Job's miserable comforters" tactics. What is really amazing is that they show up when you're not miserable and try to make you so. It's a "Job's-make-you-miserable-comforter".
When I hear a question like this, my radar goes "reeeh reeeh reeeh braying donkey alert" and I go into :B) mode.
I usually respond, "Why no, actually I am feeling fan-f-ing-tastic, thank you for asking. But the fact that you brought up being sad mistakenly indicates that your mind must be focused on sadness. Perhaps you are projecting. Is there anything you need to share with me so I can help you out?"
Usually that obtains the desired result - them exiting all huffy. To say they actually learn anything from that type of exchange is a stretch. They wouldn't learn if you engraved it on a 2x4 and whacked them between the eyes with it so they had to look at it in the mirror every day. But I have noticed the end result is that after a few verbal exchanges of this nature, they stop pulling that BS on you and move on to try it out on some other person.
Now maybe I'm a touch overreactive here, and maybe I'm on a soap-box, but to me it's taking back my life in all the little things that I'm after. And is it wrong that I do a little dance after?