Una frase idiomatica cuyo significado no es deducible si se traduce palabra por palabra.
sin traducción directa
The guys were having a yuk at Jerry's expense.Los muchachos se bromeaban a costa de Jerry.
Why were you throwing rocks at the windows of that building? - I dunno. For yuks, I guess?¿Por qué lanzaban piedras a las ventanas de ese edificio? - No sé. ¿Para divertirnos, supongo?