a few years ago, in my early teens, my family and i visited florida. we had arranged for my grandmother to meet us there a few days into our trip. i hadnt seen her in years... so the meeting was a bit shocking- she acted quite frail, but she had such a healthy glow to her.. it was weird..

every now and then- the bitch would let out a loud shriek 'apparently' out of pain. we all knew she was bullshitting us. she just wanted our pity.

the first night of her visit, we decided she would sleep in the second room of our rented cabin with me, while my sibling slept in the living room on the couch.
so, around 11 or whatever, we all went to bed. for an hour or so, she rolled about, releasing squeaks from the mattress into the room..... i laid there thinking about how i hadnt jerked off in at least a week... i was SO horny! i couldnt jerk it! she was there! then, all of the sudden, she started to moan! i was horrified! what the hell was she doing!? was SHE masturbating? could she possibly reach her crotch with such a round body? with little strength? was she just in pain? how dare she?!

the moaning continued on and off, and 3 minutes in, i did it. i couldnt help it! her moans were SO powerful, that i HAD to do it! i laid on my stomach, tried not to be obvious, and jerked off.... all the while, she moaned in pain or pleasure- it was absolutely disgusting, but a bit of a turn on...it was one of the quickest sessions ive ever had, but, ooooh it was worth it!
for the remainder of her stay, i chose to stay in the living room and pleasure my self on the toilet at night.