I think several members of the Justice League hate the Batfamily because every one of them — every single one — has the same, Batman-esque look on their face when they know something you don’t. Which they do. Frequently. Just like the fucking Bat.
VERY interesting that this moment took place in the "woman in house and wilson's building thinks they're gay/dating" episode
also. hugh laurie's little smirk here really adds a certain . . . dimension to this moment that would not be there if he'd responded to the joke in a different way