Grace had on short shorts with a sports tank top on with a sports bra on underneath. Grace found us upstairs in my room just hanging out. She climbed ...nto my bed between Marcus and I. Marcus and I were wearing simply athletic shorts and t-shirts. We all began casually talking about what was going on in life, before Grace put her left hand on Marcus' shorts while she put her right hand on my shorts around our dicks. I saw Marcus get instantly hard. As far as I knew, Marcus wasn't a virgin as. It was good for a start… “Is everything all right?” Mark heard Brent’s voice through his doorway, and pulled the covers over himself, revealing only his head and right arm. Brent walked in casually, chewing gum as he did. He looked quizzically at Mark, acting as if he didn’t comprehend the scene in front of him. He stood up unsteadily, pulling the covers tight around him. As he stumbled forwards, Brent rushed forwards, as if to help him, but Mark held him away at arm’s length with his free. His face moved closer. He could smell her strong aroma. He planted small kisses above her slit, moving downward. As his lips touched hers, her legs opened wider and she moaned loudly. He allowed the tip of his tongue to slide between her wet lips. He tasted her juices for the first time. His tongue snaked deeper inside her velvety tunnel until his chin touched her. He worked his tongue slowly, as she moaned and wiggled under him. His fingers pressed on her engorged clit, and caused her to. I looked at myself in the wall mirror. Was there something wrong with me too?I laid on my back and unsnapped my pants, staring at the ceiling. What's the deal with Tina? I wondered. Why did she get to act that way in front of mom? I could never get away with talking to mother like that, plus I had to do all sorts of stupid crudely chores and stuff! Just cause she's older? Did mom like her better?I let my fingers drift down and disappear into my underwear. It was no big deal, I just did it.