When I sensed I was at the opening I would push my hips up. She would hover in that position and move up and down on the tip. I forgot the pretense ...f pretending and started holding my cock straight up and letting her hump it.Eventually, I started leaning forward and running my fingers over her ass. I would get as far under her ass to her slit as I could. As she rubbed her clit against my cock head I would start fingering her and slipping my middle finger inside.This also started escalating. I was shocked and angry at first but didn't let on that I'd overheard them because, I would have had to fight each of them (And almost certainly get beaten up by several of them), and it would be humiliating for my mom. But it made me start looking at her in a different way, I started looking at her tits and looking up her skirt where possible, and being that age I kept getting embarrassing erections that I did my best to hide.She caught me masturbating several times in my room and told me to. I pretended to be surprised stopping abruptly. We looked at each other without a word for what seemed like ages. Eventually I ask in a rather bossy voice as to why he was still about, he shrinked back from me mumbling something which I ask him to repeat. "May I ask a favour" he stuttered meekly. "May I have something to bring with me" he enquired. "Like what" I asked. "Something personal" he responded. "Such as?" I replied. Some of your clothes if that's ok". "My clothes" I said "I don't. I said, “Hey cuz long time no see. I see you’ve been drinking a lot of milk since the last time I saw ya and have to say you’re looking pretty damn good.”She said, “ Thanks I guess – her face turned a little red and she smiled at me and said Stop it -- you know you’re embarrassing me in front of everybody. When did you guys get in?”“We got in a few days ago and started looking for some work – there might be a slim possibility that I could move out here. Come on I want you to meet my buddy.