The following Brazilian superstition was performed over coffee on April 23rd, 2019. In Brazil, it’s considered bad luck to unlock or open the door to someone else’s home. If you do, it’s said you’ll “never be invited back because your friendship will end”. The door must be opened or unlocked by the owner of the home. Growing up, children are told to “never unlock the door to someone else’s house if you like them”, because if you do you’ll become “enemies”.
The informant heard this from her father growing up, who heard it from his father. The superstition is used to stop children from getting into mischief and to instill a sense of boundaries.