The phrase comes from cannabis slang, where kush refers to a potent strain and good kush signals high quality. Clips built around the line circulate as short audio memes on soundboard and short-video platforms, where users save the relaxed vocal as a reusable reaction. Its staying power comes from versatility: the delivery is calm enough for chill compilations yet funny enough for ironic edits. Without a single confirmed original video, it survives as internet slang turned audio meme, reused whenever creators want an instant laid-back, slightly rebellious mood.