Whereas "weak sauce" is a reaction to when a person says something stupid, "true sauce" is a reaction to when a person says something you strongly believe in.
Guy 1: People suck, yet we're so obligated to help them.
Guy 2: True sauce.
Taking a trip to Colorado to ski, but spending the entire week in the bar drinking, screaming, and blowing coke while acting like a belligerent fucking degenerate ass.
Dirty Mike, let's head up north to the slopes and shred gnar gnar pow pow and then get troutsauced with some young snow bunnieslater!