This phrase is used to describe someone who drinks a lot of alcohol. The literal translation is 'to suck more than a beach shore', which refers to the action of the shore continuously 'drinking' the sea water.
Examples
- Spanish: Juan chupa más que orilla de playa, no hay fin de semana que no esté en el bar.
- English: Juan drinks more than a beach shore, there isn't a weekend when he's not at the bar.