We were experimenting with bunsen burners and chemicals. I LOVE working with chemicals. Mel, on the other hand, was super clumsy and lacked focus some...times, which is a real hazard in these labs. I kept trying to talk to her for our assignment, but after about fifteen seconds of focusing on the lab, her attention was drawn elsewhere. We REALLY need to get her back on her ADHD medicine, I thought to myself.I shook my head again, silently begging for her to just do the damn experiment. I looked. Diane is extremely pretty and was dressed in a white sheer top, no bra of course, and her big hangers bounced ever so gently as she walked. Phil was having a hard time keeping his eyes off of them. (I have her dress that way for travel as I often make her show her tits to truckers on the road and at rest stops…sometimes at the rest areas I allow them to feel her tits).When we arrived at our suite Diane went into the living area while Phil turned down the bed, adjusted the curtains,. He began lapping at her young pussy, holding her pussy lips open for better access. He was licking all up and down her pussy and rubbing her clit with his thumb in a circular motion. She was moaning like crazy, trying her best to keep quiet. “Mmm. Ever since I tasted you at that party, I couldn’t wait to be able to do this again.” He decided to start fingering her and sucking her clit instead, and that drove her nuts. Her first orgasm was arriving, and he began pumping his fingers in and out of. Maria grunted so much I thought I was hurting her, but she didn't tell me to stop. Sweat poured down my cheeks. It dripped into my eyes and stung. My mouth was dry. My nostrils flared with each deep breath. I kept fucking her, harder than I ever had. I clenched my teeth. All the while my hips were a blur, lifting Maria up and slamming her back down.Maria screamed. Loud. Her eyes opened, but all I saw were the whites. Her mouth opened too as her head tilted back. The tendons on her neck bulged..