The line comes from “Vida Loka, Pt. 1” by Racionais MC's, one of Brazil’s best-known rap groups. The track appeared on the 2002 album Nada Como um Dia Após o Outro Dia. Its comparison of trust to an ungrateful woman became one of the song’s most quoted passages. Short excerpts later circulated through lyric videos, social posts, and dramatic edits, where the refrain remains useful because it expresses betrayal and caution in a concise, instantly recognizable form.