The phrase comes from everyday Indonesian, where cicak is the word for the house gecko and cek cek describes its clicking call. Clips using the sound spread on local soundboards and short video apps as a shorthand for a lizard being present just out of frame. Because almost every home in the region knows that nighttime click, creators reuse it for instant recognition without needing to show the animal. It remains popular for light pranks, animal jokes and reaction edits where a familiar domestic sound does the work.