Dar a real
To tell the truth to someone. When used it sounds as if someone is being chastised, criticized. It is used normally amongst friends, when someone wants to tell something harsh, something that needs to be told to someone.
Olha, vou te dar a real. Eu nunca gostei de você.
Ai amiga, acho que vamos ter que dar a real pra Lígia. Não aguento mais esconder dela.