The first time I heard it, it was pronounced "Aceed!" like /acid/ with a long /i/ and so it didn't twig. This is my two-year-old spilling ice cream on her shirt in the mall.
Then I heard it again, this time she spilled water by accident on herself while at home drinking. And my mouth stayed open for a few seconds longer than it ought to (giving me a slight jaw ache afterwards) and my eyes turned larger and a bit watery towards the end...of the realisation that my daughter is cussing. Not only that, she was cussing like me. Thoughtless git that I am, I'm a creature of habit and "Aw shit" has been a long time favorite expression of mine be it said in anger, joy, panic, frustration, sorrow, excitement - the works. You name it I have an "Aw shit" for any conceivable situation in the world.
This made me stop and think about cleaning my act a bit, for my daughter's sake. I've now modified it to "Aw shucks" a very lame version of the original which does not really embody the correct semantics of its predecessor. But shucks, I've got to try, right?
So Amber now says "Aw shucks!" like me when she accidentally does something that she shouldn't have. But impishly whispers the previous expletive and laughs like she's had one up on me. And that's coming from a two-year-old girl (she only turned two yesterday)! Shucks!
I knew some way or the other, I'm going to screw up this creature entrusted to me by the workings of biology...Aw shit!