The phrase originates from the relationship system that forms part of Bioware's title, Dragon Age: Origins, where the aforementioned Shale is found as an ally and playable character. This character is known for being a stone golem, for her ability to use crystals as weapons and for her bizarre opinions on pretty much everything, causing almost every attempt to start a conversation with Shale getting mad at you and the game displaying "Shale Dissaproves."
Overlord: *Shale Disapproves*
Shale: Try to imagine, if it will, what it would be like to be surrounded by nothing but peasants, all oblivious to it.
Player: Sounds like you were bit of a voyeur.
Shale: I don't care to discuss this anymore. *Shale Disapproves*