When I graduated high school (18), I went to my uncle’s house in Tennessee for a few weeks in the summer to relax before starting college.  We did some fishing, hiking, swimming and just hanging out in his cabin in the mountains.  (my uncle is 10 years older than me)  He had a lot of porno mags just lying around and didn’t try to hide it.  He also loved walking around nude and encouraged me to do the same.  After a while, I got used to the idea and we even went skinny-dipping a few times.  I still remember the first time my uncle walked out of the shower naked.  I had never seen a flaccid cock so big in my life.  Uncle Tim was at least 9 inches.  I tried not to look, but it was amazing and I could tell he was proud of it, because he never tried to hide it from me. 

One night, around midnight, I couldn’t sleep and was horny as hell.  I got up and started playing with myself in the dim light (nightlight on in the hallway).  I was feeling daring and decided to make my way outside and jackoff in the moonlight.  On my way down the hallway, being as quiet and slow as I could, I noticed my uncle’s room door was open.  As I walked by, I stopped and looked inside.  My uncle was lying on top of his covers, completely nude, with his massive soft cock lying to the side on one leg.  I had never been sexually attracted to a guy, but I felt my boner harden as I stared at the outline of his member in the dim light.  Strange thoughts raced through my mind and I found myself inching toward his bed for a closer look.  The excitement of being so close made it difficult to breathe.  I was drawn to his cock by the excitement and daring of doing something forbidden.  I wanted to leave and continue with my original plan, but I also wanted to touch his cock.  I stood there for several minutes slowly stroking my rock hard cock (7 inches) and staring at his beautiful dick, knowing it was my uncle who was making me hard.

Finally, when I realized that my uncle was in deep sleep, I reached my hand closer until it rested on his warm soft cock.  It felt amazing!  I was intoxicated by the sight and feel and put my fingers around it, sliding up and down very slowly.  To my joy and amazement, he started getting hard.  That encouraged me to take it in both hands, ignoring my cock, and start massaging his into a full boner.  I had totally forgotten about any possible consequences.  I was just so horny and not thinking.  Soon, Uncle Tim was fully erect (not any bigger, thankfully) and I was gently masturbating him while he slept.  I knew I should stop, but I couldn’t make myself.  I just kept on going.

After a few minutes, my uncle woke up, but didn’t let me know and didn’t try to stop me.  I just kept on loving his cock with my hands and figured he would eventually ejaculate and think he had a wet dream.  That’s when he called my bluff.

“Dave..” he spoke softly, trying not to startle me.  I stopped cold, knowing I was busted.  “Dave?”

“Yeah…” I replied, letting go of his cock.  Amazed again, Uncle Tim gently reached down and took my hands in his, guiding them back to his cock.

“It’s okay, Dave.  It feels good.  You’ve been doing such a nice job, I didn’t want to stop you.  Now, I want you to continue if you want to.”

I couldn’t speak for a moment, but I eagerly started stroking him again.  He moaned a little and I knew everything would be fine.  “Sorry for sneaking in on you like this, Uncle Tim.  I don’t know what came over me.  It won’t happen again.”

Tim chuckled a little and I felt his hand caress my ass.  “Why do you think I sleep like this, Dave?  I was hoping you would do this.”  Tim’s hand moved around to my cock and he took it in his hand.  “Very nice, Dave!  This is the first time I’ve seen you erect.  You feel good.”

Tim’s hand felt so good on my cock as he expertly stroked me. “Uncle Tim, I’m not gay or anything.  I just…”

Tim interrupted with a soft chuckle.  “Hell, Dave, I know that. This is just a little fun between bros.  And it feels so good, doesn’t it?” 

I loosened up and chuckled back.  “Yeah, it feels great, Uncle Tim!  Thanks for doing mine!”

He gently guided me to the bed and I sat on the edge, still playing with his massive cock while he stroked mine.  “Dave, I want you to lie down next to me and relax.”  I obeyed, loving the feeling of his hot skin against mine.  Then he got up and moved to a new position, still playing with me as he moved.  “Close your eyes for a moment and enjoy.”  I obeyed.  I was having so much fun, I didn’t want it to end.