memer boy on Instagram: "The post features a 17-second video demonstrating a scrape test on a glass pane's edge using a blade: real glass chips brittlely, while fake plastic peels into a curling strip that "springs out," as shown in close-up frames. With over 1 million views and 555 replies in under a day, it taps into viral curiosity about everyday authenticity hacks, though many responses highlight the test's destructive nature on valued items. Grounded in materials science—glass's rigidity ca