Used in rappers names such as in Sauce Money or J-Sauce. The word is usually associated with sex. It can be used as a way of callin someone sneaky and sly. It can also be used to say you will beat someone. The beating can be from sports, fights, or even school work. It is not recomended for normal pesants to use this word in that way. That way is reserved for the people who's name contains the word "sauce" in it. It is mainly a personal way for these people to speak.
"That dogg is saucy."
"I am going to sauce you out."