A very disrespectful insult to use against someone. These are fighting words. If someone calls you jonny that could mean a couple of things. It could mean you’re a fiend for something or just crazy in general. It also could mean you have 0 rizz and struggle to pull females.
Person 1: Yo bro Im about to spit game to this girl named kate.
Person 2: He’s jonny, you’re gonna fold bruh.