One of my friends, (well, used to be friends) called me a fucking retard, then blocked me. What's the point?

So do I spam the screen shot all over his girlfriends page? Or send it to his mother? Also, let me add he moved out of the country (he's european, we met when he lived in the US) So I can't have a nice face to face talk (if you know what I mean) But it makes me BIG MAD and I needed to vent somewhere. Thanks pedes.