@Firaas
As long as either party can walk away, and you arent just dropping in out of nowhere being an ass I dont get it. Block the person and move on. Only way that answer doesnt apply is if you just go around on random posts insulting people unprovoked or something.
@Ged
Needles to say, very shortly after the exchange, I blocked the guy, and moved on. I have quite a few liked and boosted posts on there.
@freemo