Lagoa
A lagoa is a person who acts like your best friend, but they’re really just a snake in the grass. They’ll eat your secrets for lunch and then tell them to the whole school for dinner.
'You’re my best friend!' Then they told the whole school I had a crush on the principal.
'Don’t worry, I won’t tell anyone!' Then they told the whole school I had a crush on them.
They said they’d keep my secrets... and then they told the whole school I had a crush on them.