Ohkay, I have yet another question! Just one more, hopefully.

So. I have the kidfic/mpreg square there in my card. I thought I had figured out what to do with it. I'm assuming I can read it as kidfic and/or mpreg, and was going to go for the kidfic part. However, the thing I had in mind was something involving de-aging, and some other people's bingo cards have a prompt that specifically says de-aged. So, the question is, can I do a de-aging fic for the kidfic prompt, or do I need to do something with an actual child and not a de-aged Avenger in it?