“Yes. I willingly accept the task and state ‘Red’ as my safe word today.”We used to get the Sub to select their own safe word so they didn’t...forget it in the heat of the moment. I asked her what forfeit she would take if she used the safe word. Some people don’t make a forfeit for the use of a safe word some do. If the Sub can call a halt to proceedings with no impact then they effectively get total control of the scene. The forfeit makes them think twice. She stated that she would take 6. So I sat in the chair that was closets to the door in the back. The thing about this class is that it’s set up like a Colosseum type set up, where the rows go from bottom to top seating. I was siting at the top of the row right next to the door so I could make a hasty escape when class was over.After I settled in, got comfy, got my lap top out, and book, my internal clock kicked in and I soon realized I didn’t get to masturbate that morning! I was sad to say the least, but I was also very. I was pretty much obsessed with her, my obsession having a very negative impact on my social life, my few friends distancing themselves from me as my fascination with my older sister deepened into a near mania.Melanie was five years older than I was, having just turned 25, and in a strange twist of fate, she'd just been hired as the library assistant at the college I was attending. Now I could indulge my obsession any day I chose just by going to library, my excuse of studying masking my real. I lubed up the line till i had no grip on it, i waited in expectation as the line breached my asshole and i felt my stomach collapse with a loud whoosh as the air already present exited. the pump hummed softly as i began to fill with air and my cock stood rock hard ready for what was about to happen.the feeling was unimaginable i felt like i was being fucked by a cloud as my asshole tightened its grip around the line, i came before i even touched my cock. i was in so much pleasure i didn't even.