Did you know that I am Batgirl?

For reasons I can't remember, I told my (then) 5 year old son I was Batgirl about two years ago. I know it is the sort of thing that I would say, in a moment of self-amusement, brought about by some random conversation long ago. He questioned me heavily about it so I ended up having to make up details off the cuff. Apparently, I have a Batgirl suit that I hide somewhere in the house because, of course, every superhero has to hide their identity. Though pressed quite hard, I absolutely refused to give up the location of the suit, for reasons of national security. He questioned me about my ability to fight bad guys and I assured him I had taken a Judo class (literally one summer session class a loooong time ago). I admit I rather enjoyed how he looked at me after hearing this. He BELIEVED.

I thought he'd forget about this quickly, but it is two years later, and he has not, so I have continued to spin the yarn. There have been questions here and there over the months about when exactly I make time to fight evil-doers (after his bedtime) and the like. I know the parental fall from hero status will inevitably come, and sadly, probably has already started. I think from subtle language cues, he is beginning to figure that I am not REALLY Batgirl. This morning he came to me and said he wanted to hide a lego ship that he made. He wanted to hide it so that he would have a secret just like I have a secret about my Batgirl costume. And I noticed, for the first time ever, he said the secret was that I 'had a Batgirl costume', not that I 'was Batgirl'. So, is this the beginning of the end? Pretty soon he will figure out that I don't even have the costume and from there the slippery slope picks up speed until my fall from grace is complete.