Learning to Fuck

My dad died in a bad car accident a few years ago leavig my mom all alone to raise 2 kids. I was the youngest, and the only boy. We actually made out OK because my dad was an asshole and my mom was thinking about leaving him before he was killed. We ended up with a lot of money from his life insurance and a settlement from the other driver that was at fault. When I was 16 and my sister was 19, she decided to stay at home and go to the local college because her boyfriend went there too. I was pissed because I wanted her to leave. We got along pretty good but we did fight a lot. She was taking a human sexuality class and one Saturday morning she walked into my room with her textbook and a ruler. “It says here that the average penis is 6 inches when erect. I want to see how big you are.” she said.”You have got to be kidding!”, I said, “There is no way you are measuring my dick!” “I’m not, you can do it yourself. I just need to have five different guys measure there penis and write it down by Monday for class. You’re the last one.” “What in the hell are you talking about?” I asked.” It’s a project designed to break down the barriers we have when we discuss our sexuality.” she told me.”Whatever, just give me the ruler and get out.” I said. She explained the proper way to measure your cock and left the room. I got my dick hard and placed the ruler up to it. I came out to 8 3/4 inches. When I told my sister she didn’t believe me. “Quit lying and tell me the truth.” she said. I said that I was not lying. “Nobody I’ve talked to was more than 6 1/4 inches! I know your lying. Come on and give me back the ruler, I’ll find somebody else.” “Here, measure for yourself!” I told her as I dropped my pants and exposed my hard cock.”Holy shit Brian!” she giggled,”That is huge!” “See” I said smugly, “I wasn’t bullshitting. By the way, how did Steve (her boyfriend) measure up?” “5 1/2 inches.” she confided without taking her eyes off of my dick.”Can I touch it?” she asked. I had gotten horny so I told her she could. She slowly stroked it up and down and then rapidly jacked me off. I came all over her tee shirt and sweats.”Sorry,” I said.” I’ve never had a girl jack me off before.” “Well your going to get a lot more than that!” She said as she took off her clothes and got on her knees and gave me a blow job. About 1 minute later I came again. She swallowed every drop and said she wanted my cock inside of her. “You never could have been my first, Brian, your cock’s to big to fit in a virgin pussy” She said as I slid my dick into her hot wet hole. “Oh my God that feels good. I’ve never been this filled up before!” She said as I slid my cock all the way in. Her pussy felt good to me too! So hot and wet and tight! It didn’t take long for me to come again.” shoot it on my tits” she demanded, “the last thing we need is for me to get pregnent!” I pulled out and sprayed her tits with a few shots of cum. “Now put it back in and fuck me hard!” I slapped my 8 3/4 inches deep in her cunt and rammed it home. I was surprised to last more than 5 minutes this time. “OH MY GODYES OOOOOHHHHH” she yelled as she came. I pulled my cock out and went to shoot my cum on her tits but it shot on her face instead. Just then my mom opened the bedroom door. “What is going on!!??” She screamed. “Julie, get the hell out of Brian’s room right now! I am so disgusted I think I’m going to throw up! You are brother and sister for God’s sake!!” My sister got up and ran out of the room with cum dripping from her face and tits. My mom told me to stay in my room and slammed the door. I heard her yell at my sister and a few minutes later Julie left. My mom came back in my room. She was wearing a robe. “I’m very disappointed in you Brian. If you were curious about sex, you should have come to me!” She opened the robe and let it drop to the floor. She is a very pretty woman with nice big tits and a shapely ass. She has a very hairy pussy. When I was 16, she was 39 years old. My cock got hard again just looking at her. “I havn’t been fucked since your dad died and I’ve never had a cock that big so don’t waste any more time and fuck your mother!” I was shoked at the language my mom used. She had always been a conservative type and never swore. I had no trouble shoving my entire cock into her loose pussy. “Oh fuck yeah Brian your big cock feels so good in mommy’s cunt! Fuck me baby! Fuck me like a slut!” She was screaming at the top of her lungs. A few minutes into it she closed her eyes and began to buck her hips wildly.”OH shit baby, Mama’s coming!!!! Fuck me hard baby fuck me fuck me fuck me fuck me fuck me YYYYYEEEEEESSSSSS!” I kept on a fucking. she must have had 5 orgasms but I wasn’t really getting a lot of friction, plus I had allready come 4 times! My mom got on her hands and knees and said,” Mommy wants that big cock up her ass!” I put it a few inches up her ass and was glad it was so much tighter.”Take it slow Brian, don’t rip Mommy’s asshole with that big cock! You want to buttfuck me again some time don’t you honey?” “Hell yeah I want to buttfuck you again!” I said. She whirled around and slapped my face. “Watch your language buster! I’m still your mother!” She resumed her position. “Now slowly inch your cock up my asshole and don’t go fast until I tell you!” i did as I was told and slowly slid my cock in until it was completely buried in my mom’s asshole. “Now fuck me hard and fast!!!!” she screamed. I slammed my cock in and out of her butt as fast as I could. “Oh yes Brian, fuck my ass fuck it HARDER FUCK MY ASSHOLE YOU DIRTY ASSHOLE FUCKING MOTHER FUCKER!!!!” I shot my load up her ass and my cock went limp. Without a word my mom left the room and told me I was grounded for fucking my sister. “I’m sure you’ll have plenty to do around here, you little mother fucker!” She said as she closed my door.