So today, I had one of my diapers in a folded-towel, as I was about to take a shower after finishing a round of Vegas 2 with my brother. My mother comes in, and she requests sheets and any clothes so that she can run a load of laundry. As I was getting up, she took my pillowcases, and as she went for my sheets she took the towel, and she felt the diaper -- which she took out of the towel. For those who know me, you know my mom is a loose cannon -- so OMFG, thank God she was in one of her really rare good moods. She asked "uhh, what is this big diaper...??". I (as far as I can tell at the moment) successfully got it under control, playing it off as if it fell out of the bag in the bag that I came home from the hospital with last week. Done deal, for the moment anyway.
She hasn't asked anything, said anything, and no queer-eyes since... So, yeah, I'm a good lier, and I'm really, really lucky (again, so far...)