If i need to sort of say something because I am shocked when the little person is around I say"sweet zombie jesus! or sweet crispy walnuts! they don't quite express the full spectrum but I am also partial to "merde!" which is shit in french. Most people have no idea what your saying but you get to cuss a bit. Being part french I sometimes will start cussing in french so yes...those are mine.
I also like the words "squee and meep" they makes me smile for some reason