i dont have an actual favourite it depends on what we're doing at the time, for eg daddy/lttle girl i like good girl, princess, daddys special girl among other things but it's sometimes controversial so i wont go into it lol.
bondage i love ''soft talk'' cos feel all cosy and secure in rope.
pain play i like the usual btch,slut does that hurt?... owww..GOOD! type thing

then there's the 'acting'taking on the persona of school teacher, prison guard the devil (dont ask lol) and really getting into the roles..that's a real turn on because the tone of voice,mannerisms and language totally changes...mmm