Go to...

Instead of saying "Go to hell," the Spanish say "Vete a tomar por culo," which means "Go take it up the ass." Lite versions include "Go take it in a sack" (?).

This blog is getting out of hand. 

Edit: another lite-but-not-so-lite version I remembered over the weekend (because I heard it) is vete a la mierda which means "Go to the shit."