When your detective of a father asks you and your brothers what happened to the Batmobile…

Bruce [to Dick, Jason, Tim, and Damian]: *narrows eyes*

Bruce: Usually, when everything’s normal, people don’t respond in perfectly rehearsed unison.

Why certain family celebrations are avoided at Wayne Manor…

* upside-down, blurry images of a four-foot-something-tall adolescent boy pouncing on a scrawny teenage guy; a muffled mixture of screaming and hooting sounds in the background; a gruff voice angrily yelling, “Enough!” *

Duke: *tries to hold the camera steady* 

Duke: Aaaaand the birthday video becomes a nature film.

Why Batman sometimes dreads going on out-of-town Justice League missions (or, you know, dying)…

Bruce [to Alfred]: I take my eye off the ball for one minute and I’ve got one kid in a coma, one with a black eye, and one running a crime ring!