in general, the way to beat self-proclaimed geniuses in their own game of bragging (if your side of the story is correct and the genius in consideration is indeed arrogant instead of you simply making a malicious comment from a place of insecurity) is to level with their degree of knowledge and show a flaw in their methods of thinking or way of doing things, as in the case of the “geniuses” who developed the vulnerability. imagine being a mere, average bystander waiting decades for some other genius to come up with something before they can make up for their own insecurity.