A madman is when Uke gets hit at least 4 times, each hit cause 1 or more DMs. It's kinda fuzzy logic.There's no real universal definition, but I would think this is the most widely accepted definition. Doesn't really matter if it's a kick or punch etc.
A replay that is 'too grabby' would be one where grabby hands ared used unnecessarily too often, I would think.