This phrase is used to refer to someone who talks too much, often in a negative way. It directly translates to 'to crap more than a tied duck', which is a humorous way of saying that someone can't or won't stop talking.
Examples
- Spanish: ¡Cállate ya! Pareces que cagas más que un pato amarrado.
- English: Shut up already! You talk more than a tied duck craps.