Decoy: "I hate getting captured by supervillains. They always have crappy room service."
Batmilf: "Not to worry. I have already formulated a means of escape. See that security camera up there? We merely have to entice the guards to WANT to come in here and untie us."
Batmilf: "Execute Plan 69!"
Decoy: "Oh crap... Fine."
Batmilf: (out loud) "Oh dear, we seem to be giving in to our forbidden incestuous desires!"
Decoy: (out loud) "I concur!"
Batmilf: (out loud) "Oh bother! With our arms tied we can hardly explore our taboo passion properly!"
Decoy: (out loud) "Yeah, what she said!"
Batmilf (quietly) "I think it's working."
Decoy: "Off the record, you're a pretty good kisser."