My beautiful 18 year old stepdaughter told me that she has only seen one cock and it scared her because she didn’t know what to do with it. My wife was gone, and if you think I haven’t jerked off thinking about her young tight body in a situation like this before you’re crazy. She asked if she could see my cock, I know, I should have said no. But I just couldn’t. I lay on the bed. She rubbed my growing bulge through my shorts, pulled it out, and started playing with it. Looking, rubbing and stroking with her young soft hands. She spit on it for lube. I loved seeing the spit fall from her pretty lips. Her hands slightly fumbly and inexperienced just made me harder. Stroking and jerking me, she pulled off her dress. Fingered her sweet little twat with one hand and my cock in the other. Then got on top of me and rubbed her sweet bald pussy on my hard shaft, hitting her tiny clit as she humped me like a pillow on a school night. Hopping off just in time to jerk me off and watch me cum. The excitement in her eyes and her sweet young hands, body and pussy all over me were completely worth the risk. Being a good step-dad has its perks.