The 'Jazz Music Stops' meme is a quintessential reaction image used to depict a sudden, uncomfortable realization or a sharp shift in social atmosphere. Usually featuring a vintage-style illustration or a Fallout-inspired character looking deeply disturbed, the meme highlights moments where someone says something so inappropriate or strange that the metaphorical 'vibe' is instantly killed. It gained significant popularity on Reddit and Tumblr in the late 2010s as a versatile way to react to 'cursed' comments or dark humor setups. The phrase itself acts as a cinematic cue, signaling that the normal flow of events has been interrupted by something shocking, illegal, or just plain weird.