Megadeth formed in Los Angeles in 1983 after Dave Mustaine left Metallica, becoming one of thrash metal's Big Four alongside Metallica, Slayer and Anthrax. Decades of albums like Rust in Peace built a loyal fanbase that treats the band as essential listening. This short question turned into a shareable reaction because that loyalty is the joke, the speaker cannot process a different opinion. Metal communities and soundboards keep reusing it for debates about rankings, riffs and rival bands, where an exaggerated shocked response says more than a long argument ever could.