Sweet-potato-sauce is an exclamation similar to '
cool', 'awesome' and '
sweet'. It is used mainly because of its superior syllable construction. It often seems insufficient to simply say 'sweet!' when you find something pleasing. However, 'Sweet-potato-sauce' has, at 5, the perfect number of syllables. You might laugh, but it is the best way of expressing you contentment.
Person1: Hey, were you able to
finish the summer
reading?
Person2: Yeah, I finished the whole thing!
Person1:
Sweet-potato-sauce!