The story
Referencing a scene from the second episode of the American satirical sitcom Arrested Development, in which the character Michael Bluth inspects a bag labelled Dead Dove: Do Not Eat and, having found a dead dove inside, remarks on his surprise, "Well, I don't know what I expected." Coined by Tumblr user mostlyvalid in 2015 as an Archive of Our Own tag to "signal[] that a given fanwork is for rolling around [in tropes that might be viewed as problematic], not giving a measured evaluation of anything. […] there will not necessarily be any subversion, authorial commentary condemning problematic aspects, or meditation on potential harm."
Etymology from Wiktionary, CC BY-SA 4.0.