You're going to want to fix yourself a tasty beverage for this, because this is the sort of Facebook trolling that is the stuff of internet legend.
Basically, Brendan post a Facebook status or comment, Robert trolls it to no end, Brendan gets mad -- repeat. It's not the most advanced form of trolling, but it gets the job done. While Brendan might have some unpopular opinions, other times he simply makes it way too easy for Robert and leaves himself wide open for a jab.
Now let the Facebook trolling adventure begin!