You're hanging out with your sister while she gets ready for a date with her boyfriend. It becomes clear after some time that this will be their first time... finally having sex. She's so excited, but you aren't sure how you feel about this happening to her. Is it because you're protective or... because you get a little excited when she starts dressing in front of you? <br><br> Either way, when she comes back home later, she says it was great... for him. She was hoping to finish, to get an orgasm like the ones she's been getting on her own lately. But that it's okay, clearly sex is for the GUY to enjoy and for her to aid in. She crashed on the bed from exhaustion and there's such a peek up her dress that... <br><br> Well, you don't think it's quite fair that he finished off and she didn't. You take to the bed and decide to let her finish, swirling the boyfriend's cum around with your tongue as you suck her clit and tongue-fuck her hole to orgasm.