Jerk off instruction/encouragement/dirty talk/taboo step sister role play. It's naughty to jerk off for your step-sister you know. But I think I will let you.... only if you let me taste your cum. I know you fantasize about fucking me. I'm not going to let you fuck me but you can imagine while I tease you with my tits and you jerk off for me. You want to cum all over your step sisters tongue don't you? Cum for me please, let me taste your cum.