(Everyone in this story is over the age of 18.) The fitness test would be the last step before I would be accepted into the sex training academy. We w...ere issued exercise clothes. I was given running shoes, shorts, and t-shirt with the logo of the academy on it. The instructor was a slim blond named Jackie with long hair and a nice tan. Her assistant was Liz, a slim brunette with long hair and a prefect hour glass figure. They were both wearing tight shorts and tight shirts with their midriff. ?Slight change of plan, Joey,? Jesse whispered. ?I want you to use invisible ink.? He handed Joey a bottle. ?It's formic acid, what ants sting with. Use it instead of your ink, but let her think she's being permanently disfigured with tattoos. Now, here's the plan,? Jesse said loudly enough for all to hear. ?She likes to show off her tits, so you should make it so she won't. I figure a penis on her cleavage. Use black ink on her nips and around them. Satanic pentagrams, Nazi swastikas,. Men dream about this scenario and there I was. I pulled her closer to me and inserted myself inside her hard. I used her hips as leverage for me as I humped her with a very hard and fast rhythm. Within minutes, I thought I was going to cum and knew she was going to. Her upper lip was quivering, her moans were coming from deep inside her and the pleasure we both felt was amazing. When I came, I dropped three very large spurts of cum inside her. It felt for a second as though I wasn’t going to. "You have a very desirable body, Melody, let's see if you know how to use it properly. I have not cum since leaving England. My balls are full and I need release. You will suck my cock, you will allow me to ejaculate into your mouth, and you will swallow every drop. How well you do this will determine whether or not you still have a job. Is that clear, slut?" I whispered, "Yes,Sir." and took his penis into my mouth. He was rough, grabbing my hair and thrusting himself in and out of my.