Mocoso (en. Brat)
/moˈkoso/
Slang Meanings
It is used to refer to someone who acts immaturely.
You're a brat; you can't always complain.
Eres un mocoso, no puedes siempre quejarte.
Term for someone who cries a lot in situations that do not require it.
Stop being a brat and face reality.
Deja de ser un mocoso y enfrenta la realidad.