Goodness gracious is an exclamation of excitement, surprise or frustration. It is a Southern term used primarily as a substitute for cursing, and as such it is a minced oath. Sweet little old ladies use this term a lot.
1. Goodness gracious, Tommy, clean up that room!
2. Goodness gracious, if you don't just look beautiful today, honey!
3. Goodness gracious, I have gas today something fierce.