Sort it out yourself / figure it out on your own
Perdeu a chave? Rebole no mato, não vou te ajudar.
Lost the key? Sort it out yourself, I'm not helping you.
A Northeastern phrase, originally literal: rebolar no mato meant to throw something useless out into the bush — the rural-house equivalent of taking out the trash.
Falando's Idiom Trainer teaches you to recognize idiom meanings and create sentences using them, so you can speak like a Brazilian.