Ok this is what happened between me and my teacher. (Coach, Gym Teacher)
Well one day, I was playing basketball with some friends in the gym before leaving for the day. The bell rings, everyone runs to the locker room, I was on my way to the locker room to clean up and change when my gym teacher stopped me and asked if I could help him pick up and clean up the gym. I couldn't say no, it was a nice thing to do since he lets me and the guys get away with stuff.
After we finish cleaning I go into the locker room followed by the gym teacher, we were talking on the way down. I notice everyone is gone already so I said screw it and jumped into the showers which I normally didn't do. About 5-10 minutes later, my gym teacher walks by the showers and says, mind if I join you, I really need to take a shower. I responded with a yes. I was thinking in my head, oh wow I hope I don't get a hard on when he is in here. A couple minutes later my gym teacher walks into the showers with just his boxer's on and a towel around his shoulder. He takes the shower two away from me. By this point I am just washing away the soap and about to start washing my hair. He starts asking me questions along the line of, do you have a girlfriend, could you help me clean everyday, what activities am I interested in etc... I am an athlete myself, I love playing baseball, basketball and football. We chat for a little while, while we are chatting he starts soaping himself up, works his way from head to waist and waist to feet then his private area. While he is doing this I am going crazy in my head wanting to go over and lick him clean, I couldn't stop staring at his body, ass, and cock. He had a 6 pack abs, dark brown hair, very furry, nice mustache and goatee, green eyes, nice big legs and arms, his ass so tight and muscular, and last but not least, his cock which was about 5 inches soft.
I am about done, and ready to leave when he asks me, hey do you mind if you get my back for me, its tough doing when you don't have a rag. I said sure why not, so I start soaping his back, I went from neck line, to ass crack. Everytime I went near his ass he started to laugh. I said whats so funny he responds you are cleaning my back and touching my ass. I start laughing with him. He turns around as I am cleaning his back and says you know I think you are a very good looking kid. I blush a little, then he moved in closer and kissed me, first on my lips then on my neck. He started to caress my shoulders, at this point I started getting hard and really turned on. He moved his hand down to my cock and started to jerk soap onto it. I stop him and ask, do you think we will get caught....... He responded with a no, then started lowering himself to the ground, slowly but surely he starts to lick my pecks down to my stomach then to my thighs working straight to my cock and balls. He first starts licking around the head, then gently kisses it. He soon then, took my whole 7 inchs hard into his mouth taking inch by inch. I stop him before I cum, and push him down to the ground, I jump and lay on top of him. I turn around and we did a 69, he was rimming me while I was sucking his 8 inch hard cock. Hastily licking the head of his cock, moving down the side and up again, then moving to his balls and going in a circular motion with my tounge, sucking and licking up making him make a sound of pleasure. I then move to his cock again and start sucking him, going up and down slowly enjoying every minute and drops of pre cum he gave me. Soon after I felt him spit on my ass, then put in one finger then another going in and out slowly not wanting to hurt me. After this point, me and him were horny enough, I got up and got on my back he came over to me, pulled my legs up and put them on his shoulders, then slowly inserted his cock into my ass, slowly fucking me for the first couple minutes, then he started to drill my ass, going fast and hard, I start to jerk myself off then in a couple minutes I am begining to cum. He stops and pulls out takes my cock in his mouth and sucks me off, he took every drop of cum that I had. Soon after he was begining to cum. I return the favor and take his cock deep into my throat and it felt like shot after shot of cum shooting into my mouth and back down my throat. After we are done, we both kissed and layed there for just a couple minutes talking. We both get up, take another shower to clean off, but we are both in the same shower booth, washing eachother.
After we get out of the shower, I go and get dressed and ready to leave. As I am about to leave, my gym teacher stops me and said he had a good time, and he is looking forward to the rest of the year, but said that this stays between me and him, which I kept it that way. I got his phone number and we had been messing around atleast three times a month for 6 years straight until I moved away

.
It wasn't long ago that I moved, I still try and keep in touch with him. I call him to say hi and see how he is, we sometimes have phone sex. I have plans next summer to go away with him on a trip, that sounds fun ^^.