shibbity blibbits
also shibbity blibbitz. interj. Used in exclamation as a euphemism for shit, usually when one is about to say shit but realizes that someone is standing there that would not approve. From shit + jiminy cricket + blibbit (see links for more info).
I'd better be careful or I'm going to hit my hand with this ham— oh sh—shibbity blibbits! Bring me some ice, grandma.