I was just screwing around, as you do, and accidentally wrote a minifill for this prompt:

Basically Karen walks into the office or one of their flats and sees Foggy kissing Matt in costume. She knows Matt and Foggy are together so she starts yelling at Foggy for cheating on Matt.

http://daredevilkink.dreamwidth.org/1296.html?thread=2356240#cmt2356240