You know exactly how to insult your favored enemies in order to make them lose their heads.
Benefit: As a standard action, you can make a Bluff check against one sort of favored enemy. Any creature of that type within 60 feet of you must make a Will saving throw or become angered. If an affected creature attacks you, it’s treated as if it were using Power Attack (taking a penalty on attack rolls but gaining a bonus on damage rolls). If the creature already has the power attack feat, the attack penalty increases by 1 and the damage bonus increases by 2. These modifiers end when combat ends. This ability does not work on creatures that cannot understand you, though sometimes a simple gesture is sufficient for an intelligent opponent to catch your gist regardless of any language barrier.
Pathfinder Companion: Gnomes of Golarion. Copyright 2010, Paizo Publishing, LLC; Authors: Hal Maclean, Colin McComb, Mark Moreland, Jeff Quick, Sean K Reynolds, Steven Schend, and Owen K. C. Stephens.