I'm relatively young, but I'd have to say it was after the 2013 win against Florida. I was in high school at the time and all the UF fans were talking crap for weeks about how they were coming off a double-digit win season, and how we'd barely won seven games the year before (sound familiar?). It was going to be a "blowout," and they were "going to start a streak against us." My section at Sunlife (I don't remember if that was the f**cking name of the stadium at the time) was full of Gator fans that were beyond obnoxious and loud. They had this type of fake confidence where you could tell they were trying to look down on all the Miami fans. Obviously, they all thought this game would be a blowout and that it'd be done by half. They started shi*ing themselves at the end of the third once they realized they could actually lose.
Once Duke ran it in and put the game out of reach in the final minutes, they started clearing out quick. The guys that'd been talking to me all game muttered "congrats" and didn't even make eye contact as they left. All the Gator fans at school didn't even talk about the game. When they did they made the usual excuses: "if we hadn't turned it over 5 times," "9 out of 10 times we would've beat you," "the refs rigged it." Once their season went to crap they tried to equivocate the loss saying we'd beaten the worst UF team in decades. Didn't matter though, we beat them at full strength before the injuries and they had a collective meltdown.