I had no idea when I got a phone on Wednesday that my little sister who just turned 18 was this big time cock sucking whore, my friend Jessica calls and tells me how she's fucking her boyfriend and sucking all the cocks in her high school. Jessica even sends me nudes my little sister sent Jessica's boyfriend. I hang up since I can't believe my eyes and what she's showing me. I hear a strange noise in her bed room as I press my ear up against the door. I peer in slowly cracking the door curious to see what noise jenna is making and why it's so loud. I peep in, and she's making these noises bobbing her head up and down. She's struggling to suck a cock!! My eyes are shocked! I don't yell or scream or whatever. I become her cock sucking expert. Showing her how to suck a massive cock since her tiny mouth can't seem to handle it. As her big sister I want her to know how to fully please a man and orally get him off. As she starts sucking I can tell she tell really is enjoying and I shove her head down deeper watching the tears roll down her face. She's loving it and I'm so proud of my little whore sister. She's trying so hard to suck a big cock. She looks so horny and ready and close to cumming I help her along by fingering her and even letting her Cum on my fingers only to wipe her own squirt on her face. She keeps sucking and moaning and begging for cum like a good whore. I tell her to keep doing like I told her before I leave and go take care of my self