maybe the way 2Face & Ivy are grilling each other cautiously yet with contempt. if you've ever seen the episode this pic's inspired by, you'll remember these lines:
2Face: (after Ivy greeted him) "half of me wants to strangle you!"
Ivy: "...and the other half?"
2Face: "hit you with a truck!!!"
Ivy: (to the rest of the group) "we used to date...!"