The way Batman's cowl is angled in the last scan makes it fairly obvious that that pervy smile is so not even a little bit for the comic book he's pretending to read. But Dick wouldn't splay out on his ass like that if he didn't want him to look, right?
And I'd forgotten how adorable Superfriends Robin is. Only he looks so sad to be tied up up, which I must only be noticing because it's such a contrast from other versions of Robin!Dick.