Continuing on masturbating without actually touching myself
When I was younger, I used to go swimming with a friend of mine in his pool. Swimming always made me horny for some reason and I would always get a hard on in the pool. Since it was an above ground pool, there was a liner in it. On the bottom of the liner were seams. So when I was swimming under water with my cock hard as a rock, I would hold the seams to pull myself all the way down along the bottom of the pool.
I would tuck my hard cock between my legs in my bathing suit. Pull myself along the bottom of the pool, pressing my hard on against the bottom while pulling myself along using the seams in the pool. It took about ten minutes of continous movement, but I would always manage to cum in my bathing suit in the water. If I positioned my cock right, sometimes I would position the head in the leg opening of my suit so my cum would shoot into the water. No one in the pool had any clue as to what I was doing. They just thought I liked to swim on the bottom!
This leads to another story later on in life, I'll post later.