Om, often written as Ohm, is an ancient sacred sound from Hindu, Buddhist and Jain meditation traditions, traditionally chanted at the start and end of prayers and yoga sessions. Online, the short resonant chant was clipped and reused as a meme sound, detached from its religious context and placed over jokes about meditation, mindfulness and instant wisdom. Its popularity comes from how recognisable the drone is within a second, making it perfect for reaction videos, edits and soundboards where a brief moment of exaggerated zen is needed.