(This video is a bit cheaper because it's shot on my phone rather than my filming camera!) Your sister is best friends with your girlfriend, and today she says she has something she needs to talk to you about... Your girlfriend told her how you keep cumming way too fast and ruining sex! Your sister tells you that your girlfriend is really annoyed about it and is even considering breaking up with you... But don't worry, she wants to help you both! She quizzes you about your masturbation habits and if you edge yourself often, and when you tell her that you actually never do that she's shocked and tells you that's probably why you're not able to hold it at all! She says she wants to help train you up, and tells you to start stroking your cock so she can see what your stamina is like. You're embarrassed and unsure, but your sister insists that it's necessary and anyway not to be embarrassed, sex is perfectly natural and normal! She starts off by just having you stroke in front of her, stopping you every time you start getting close to cumming, but then starts to make it even more challenging by gradually undressing in front of you! By the time she's got her tits and pussy out you're absolutely bursting to cum, and she finally relents and allows you to after you've begged her a bit! You shoot a huge load all over the bed as she watches, and she tells you she's really proud of you, but that you should do some more practice with her over the next few days before you see your girlfriend again, just to make sure you're really ready to impress her! TAGS: british, english, redhead, ginger, tattoos, tattooed, solo female, roleplay, dirty talk, posh accent, pov, taboo, bro sis, brother sister, siblings, sweet, loving, sex lesson, sex lessons, edging, joi, jerk off instructions, jerk off encouragement