I discovered masturbation when I was about 11 or 12. Unlike others who have discovered it by soaping up or rubbing up against a pillow I discovered it because of a 'squiggle pen.' I was in the bathroom drawing with the vibrating pen when it slipped and vibrated against my penis. As you can imagine I had an instant hard on and came very quickly. I remember the first time I actually came I thought I was going to pee but once I let my instincts take over, I had an intense orgasm. It wasn't until about a year and many 'AA' batteries later that I finally discovered using my hand to jerkoff.
Around the same time my cousin Dave and I began fooling around with masturbation together. He and I would hang out in my garage and look at the porno magazines that my dad hid there. I remember he saying, 'I'm big' as we flipped through the magazines for the first time so I enquired about what he meant. He didn't answer. That proceeded to us taking turns mooning each other while standing on top of a large box. He would bend over so far that I could see his balls and when it was my turn up there I mooned him but then turned around to give him a frontal flash. He started staring at my penis which was erect by this time and then pulled out his to show me. We looked closely at each other's equipment and then started to take hold of it and play around. We would sword fight with our erections and then started a game where we would open our mouths real wide and put the other's penis inside but it couldn't touch the inside of our mouths. Trust me when I tell you that it did not take very long before we accidentally moved and the penis touched our mouths and we began to lick and suck. Having my dick sucked for the first time was one of the most amazing sensations and don't compare to the blowjobs my girlfriend has given me. Dave would suck and suck and pay attention to the most sensitive spots of my penis. We would spend hours together jerking off and sucking each other.
In the time span of two years which all this lasted we never came in each other's mouth. Hand jobs were the furthest we went when it came to finishing each other off. I'm now about 12 years older from this entire experience and am glad that it happened the way it did. This experience with my cousin broadened the way I see the world and made me secure in what and who I jerk off to/with.