Bros: an example of dumb kids making themselves look like complete retards calling people faggots.
Anti Bro: Pretty much the smart ones in all the bro-hater war.
Bro: sht uo fgt u sux Dix ouky?
Anti Bro: Why are you still trying 7 year old? You're making yourself look like a retard.
So in summary, the bros are complete idiots who think Pewdiepie actually cares about them.