In Zulu/Xhosa mythology, Tikoloshe, Tokoloshe, Tokolotshe, De'Avion or Hili is a dwarf-like water sprite. It is considered a mischievous and evil spirit that can become invisible by drinking water or swallowing a stone. Tokoloshes are called upon by malevolent people to cause trouble for others.
*My child misbehaves*
Me: If you don't behave, I will call the tikoloshe to beat you.