I was at my friend Zack's house working on a project for school when his sister, Sara, started texting me. I got her number maybe a month ago at a party at my friend's house. We'd been texting for a while, and flirted quite a bit. She's hot: long blonde hair, blue eyes, pretty face, hot body with a fucking amazing ass. She's got a boyfriend who's a senior (she's a junior and I'm a sophomore), but she's known around the school as a slut. Anyway, Sara was texting me that I should come to her room because she wanted to vent about a fight she was having with her bf, but that I shouldn't tell her brother where I was going. Sounded goddamn good to me. I told Zack I was gonna go to the bathroom, then went down the hall to Sara's room. She opened the door in just a bra and a thong. In-fucking-credible. She closed the door behind me and locked it. I asked her about her bf problems and she put her hand over my mouth. "I don't wanna talk about him right now," she said. "I just wanna suck your cock." She dropped down to her knees, pulled my dick out of my pants, and took it all the way down her throat. Fucking jackpot. I almost forgot that I'd told Zack that I'd be in the bathroom. I didn't want him to walk by and wonder where the hell I'd gone, so I told Sara that. She pulled my cock from out of her mouth said, "That was a dumb story, but c'mon, we'll make it work." Then she got up off her knees, grabbed me by the dick, and led me to the bathroom. The view of her ass swaying back and forth as we walked through her house, her with my dick in her fucking hand, while her brother was just down the hall, was goddamn amazing. Sara shut and locked the door once we were in the bathroom, got back on her knees, and got back to giving me some fucking incredible head. She was giving me the best blowjob of my life. As I was fucking her face, maybe like ten minutes in, somebody knocked on the door. "Hey man, sorry, but did you see Sara on your way here?" It was Zack. "Her boyfriend just showed up looking for her. I thought she was here, but she ain't in her room." I kept fucking his sister's gorgeous face, looking down into her blue eyes as she looked up at me. "Nah, man, didn't see her," I said, or something like that. It was kinda hard to concentrate on talking to Zack with his sister's lips wrapped around my dick. I think he said alright and left. Pretty soon, I half whispered half grunted to Sara, "I'm gonna come," and she pulled back from my dick and started pumping it with both hands, right at her face. I blew my fucking load all over her face and in her open mouth. She even got some in her hair. I got dressed and peeked out the door. The coast was clear, so she made a mad dash to her room. Luckily she made it without anyone seeing her. I walked out and went to see Zack. Five minutes later maybe, Sara walked in the front door, wearing clothes this time. She told her boyfriend she had been at her girl friend's house. Then she kissed him on the goddamn lips. Zack and I finished up the project and I drove home, still thinking about coming on his sister's hot face. Today was the best fucking day ever.