The Love God

Fixed prepositional phrase expressing that something was done without someone's knowledge, typically implying betrayal or secrecy. The literal words ('at the back of') do not convey the social/relational meaning in English.

The phrase 'ponerse raro/a' alone means 'to act strange'. Used here in plural as an invitation to be uninhibited or goofy together, a colloquial way of saying 'let's have fun without caring what anyone thinks'.

A playful, invented euphemism used to say two people slipped away to kiss or be romantic. 'Ciudad Besos' is not a real place; it functions as a jokey circumlocution, similar to 'going to smoochtown' in English slang.