Warlord Gorchuck was responsible for collecting supplies donated by the Horde in order to open the gates to Ahn’Qiraj. At the time, he tormented poor Oxhorn, who just wanted to enter a super-cool new dungeon. Now that the gates are open and Gorchuck is retired, his only life goal is to annoy Oxhorn at every available opportunity.
And, if that weren’t enough, he happens to officiate weddings in his spare time, specifically so he can harass the bride. Yeah, the guy is basically a big jerk.