you can’t say “i know batman” and get away with it in gotham. “i saw batman last night”? plausible. he uses roofs and balconies more than actual solid ground so yeah, you probably did see him. “he was only five feet away from me at the central plaza when the bomb got defused”? so was half of the city because the joker decided christmas eve was the best time for an explosion. but, “i know batman”? are you sure? are you sure you know batman? does anyone really know batman? maybe batman doesn’t know batman, the layers of secrecy on that guy are thicker than that time the gotham river got filled with dense tart sauce but the authorities thought it was blood
meanwhile in metropolis, “i ate a burrito with superman” is probably met with “you didn’t bring him to your grandma’s for that sunday roast i know she rocks? what is wrong with you? i baked him cookies while he was telling me about his mom’s cooking. how could you treat him like that, jennifer, the guy saves us from brainiac every two weeks”
“How could you treat him like that, Jennifer”