hacer agua(s): empezar a decaer, fracasar o hundirse.
-Tuvieron que pedir socorro porque el barco hacía agua(s) — They had to call for help because the boat was leaking/ taking in water [Literalmente]
-En el segundo capítulo, la serie empieza a hacer aguas — In the second episode, the series starts to flounder/ go downhill
-Su matrimonio está haciendo aguas por todos lados — His marriage is on the rocks/ falling apart
-La economía china está haciendo aguas — The Chinese economy is floundering/ starting to go under
-Tu teoría hace agua(s) por todos lados — Your theory doesn't hold water / is fundamentally flawed/ doesn't have a leg to stand on
