How to Tell if Your Step-sister Is a Squirter

You walk in on your step-sister in a naughty situation. She's wearing black lingerie and stockings, those little black flats with the bow on top that you love and most interestingly, a thick pink choker around her neck. She was watching porn, but of course her step-brother interrupted her. Well she's too horny to stop so you better get out or get naked with her. It's not like you've never seen your step-sister's tits before; Seriously get out or get naked too! It turns out that she is even more turned on seeing you turned on, telling you to touch yourself, talking dirty and giving you jerk off instructions ending with a cum countdown. She rubs her wet pussy, fingerfucking herself and using her vibrator on her clit and inside herself until she waterfall squirts all over you gushing 15 times!