Token listrik refers to the prepaid electricity system widely used in Indonesia, where homes buy a code and enter it into a digital meter to add power credit. The meter's beeps became a shared household sound, signalling button presses, successful input and low credit warnings. Online, Indonesian creators turned that everyday noise into a meme sound for videos about running out of power, money or energy. Its humour comes from how universally stressful and familiar that warning tone feels across millions of homes.