Friend's Little Sister

My name is Mike. I'm 18 years old and pretty average in size. I was about 5'6 and weighed around 135lbs. I just finished high school and was getting ready to go to college. Me and my buddy decided to spend one of our summer days off playing video games at his place. I arrived at his house and his mom welcomed we in. I've been friends with Chris for over 10 years so his mom knew me really well. 

Chris was in the shower so she let me go hang out in the game room while he finished. I went in and noticed his little sister was in there watching TV. Britt was 3 years younger than Chris. While me and Chris were more studious and gamers, his sister was more athletic. She was on the school soccer team and cross country team. She was a little shorter than me, but much more stockier. She actually had muscles, probably had 15 or 20 pounds on me. 

I found myself staring at her, as she lay on the couch with her feet up, not noticing me walking in. She was in a baggy hoodie and shorts, with white Nike crew socks pulled up. As I took another step down, the floor creaked and she looked over and saw me. "Oh Mikey, what's up" she said as she sat up. I hated that she calls me Mikey, my parents are the only ones that call me that. I told her I was here to hang out with Chris. "Oh you guys are gonna nerd out on games huh, a little Halo party" she teased playfully. 

I ignored her and walked over to the couch and sat down. "Maybe if you guys went out and played some sports, you two wouldn't be such wimps" she said as she gave me a playful push which sent me to the other side of the couch. "See, wimp!!" She said laughing. "Hey back off okay, we're not wimps, we're guys. And I'm older to, so just watch it" I said raising my voice a bit but also knowing I didn't sound very confident. Even though I was older, her muscles and size did make me nervous . "Oh so being a senior makes you a big tough guy?" She said as she stepped towards me. 

I didnt know where this was going but I felt my ego flare up. I made myself look as big as I could since I was taller and stepped towards her. "Yeah I'm older and taller and I'm a senior and I'm a guy. So why don't you go upstairs before I make you" I said, my voice almost stammering. She laughed out loud. "Why don't you try saying that with a bit more confidence next time." She stepped towards me and gave me a push, which knocked me right over onto the couch. Before I knew it, she jumped on top of me and pinned me onto the couch. She was sitting on my chest and held both my arms down with hers against the couch. I pressed up trying to get her off but she didn't budge. "Hey get off me" I said but she just smiled. "Make me" she said with a laugh. I tired harder and harder but I couldn't get her off which just made her laugh more. "Say you give up and I'll get off" she said, but I wouldn't. Not a chance.