Season 1 · Episode 46
Violetta
A musically-talented teenager returns to her native Buenos Aires after living in Europe.

Literally 'everything rots.' Used to warn that a situation will become seriously bad or uncontrollable if something is revealed or goes wrong.
Very common in Argentine (Rioplatense) Spanish. Refers to a situation where someone has made a fool of themselves in front of others. Often used exclamatorily.
Literally 'made dumb/stupid.' Used here to describe someone who has been so charmed or manipulated by another person that they can no longer think clearly or see the situation objectively.
Literally 'to lose the stirrups' (riding). A fixed idiom meaning to suddenly lose emotional control. Non-compositional: knowing 'estribos' as stirrups does not help decode this in context.
The phrase 'de una vez' on its own can mean 'once and for all' or convey impatience ('just do it already'). Often intensified to 'de una vez por todas.' Non-compositional in the sense that 'de una vez' does not literally mean 'once and for all' from its parts in a way an English speaker would naturally recognize.
From chess: 'jaque' is check. Used figuratively to mean a position or situation is seriously threatened. The chess origin is known but the figurative extension to non-game situations is idiomatic.
In Argentine (Rioplatense) Spanish, 'hacéme el favor' or 'hacéle el favor' is used sarcastically to express that something is absurd or hard to believe, rather than making a genuine request.