Some people don't like to say "have an easy fast" because the point of the fast is that we should do tshuva and feel the sadness and destruction. Of course this is true but Rav Yisrael Salanter said that another Jews gashmiyus is my ruchniyus so I do wish people an easy fast [may Hashem forgive me].
Tonight I learned that in Persian they "Ghabul Bashe" which means "your fast should be accepted".
So to all of my sweetest friends I say "Have an easy, meaningful fast and Ghabul Bashe".
[PS - Next time I am REALLY mad at someone I think I am going to cry out "Ghabul Bashe" and they won't know what hit 'em....]