I haven't, but my wife has. Actually, it was pretty funny.
We were having dinner at a nice place for our anniversary. The waitress asked what the occasion was, and my wife replied, "It's our anniversary." No big deal, right?
The waitress asked, "Oh, from when you met, or?"
"No, wedding."
"So, first anniversary?"
Same sex marriage in California is pretty new, so good guess there, but my wife let it slip that we have been married for 20 years. The waitress looked at us in disbelief. I raised my hand and told her that I used to be a dude. The look on her face was priceless. At least she was cool with that.