A way to describe something that is more moronic then just regular moron. When the word moron is simply insufficient to describe just how idiotic something is.
Jackie: Could he BE any more of an idiot?
Jen: Moron Sauce!
Noun: Epic sauce is the very essence of epicness. It epitomizes the highest degree of achievement most people can expect to achieve. A synonym for epic sauce is leet sauce; however, epic sauce much more preferable than leet sauce.
Mercrutio: "I think Transformers was a pretty epic sauce movie."
François: "Are you kidding me? Superbad was an epic sauce movie. Transformers was only a leet sauce movie."