Game of Thrones is such a popular franchise, so it's not surprising that some hilarious folks decided to spoof it with some "smear ads", targeted at prospective rulers.
For example, is Daenerys actually any good for Westeros? Or will she just destroy everything with her dragons? What about Joffrey Baratheon? Where's his birth certificate? Who's his real father? And as for Robb Stark, is he just a "wolf in sheep's clothing"? (pun intended!)