I can't really recall any personal gaming arguements right off the bat, but my brother related to me plenty of encounters with dim-witted pre-teens and their videogame assumptions. Some examples:
-Some kid who said that the next Smash Bros. (I think this was when Brawl had been fully announced, mind you) would be called Super Smash Bros. World, or something like that, and you could do fatalities (make Fox shoot himself, decapitate Pikachu, etc.).
-Another kid who--and I refuse to believe that he genuinely thought this was true--said that "Zero Suit Samus" was mistranslated during North American-ization as "No Suit Samus" and there was briefly a nude Samus as a character. Thirteen-year-olds and their idiotic fantasies...