Stitching Blackout?

<---  I just finished up a newsboy cap this morning, which is just a Levi Hat with a strap sewn on the front.  As I'm finishing off the last few stitches of the strap, I suddenly realized that I don't even remember making it.  I had a stitching blackout!  No, but seriously, I've made so many of these hats that I think I can do it in my sleep!  LOL

So I'm wondering... is there anything that you've made SO many of that you sometimes just "blackout" and create while in a daze?  Discuss....