com a pulga atrás da orelha

Portuguese

Etymology

Literally, “with the flea behind the ear”.

Adjective

com a pulga atrás da orelha (invariable)

1. (idiomatic, of a person) distrustful, suspicious
2. Used other than figuratively or idiomatically: see com,‎ a,‎ pulga,‎ atrás,‎ da,‎ orelha.