Skinny smooth trees and metal poles. The end of the school year, the start of summer recess, a restless excitement had infected everyone like a virus. The summer-like weather, warm, dry, with a slight breeze , a perfect day. Without a dress code shorts and flip-flops topped off with light short sleeve button up beach style shirt was standard with guys and girls. This all added up to spontaneous, persistent erection syndrome, going commando of course, crippling. Nervous from plans to go hiking in a remote canyon near home and take all my clothes off after school I had butterflies in my stomach. My penis was hard most of the day, at some inconvenient times. Ever since discovering the pleasures of climbing poles and skinny trees naked. I had sought out secluded spots where I could do it, this being one of them. I was to visit a new place today, with many skinny smooth barked eucalyptus trees. The bike ride from school as usual was with others in the neighborhood. I took the same route home until suddenly I took a detour. I said see ya later to my friends, then headed towards the secluded canyon just a few minutes away. I reached the end of the trail and ditched my bike. I was already aroused at the thought of getting naked outside. A little further on foot and there the trees were up on the hill. I wasted no time undressing near a boulder. Pre cum flooded my urethra. The sheer pleasure of being naked outside was intoxicating. My penis was rigid as can be swaying about in front of me jiggle with stiffness with each step I took. Some shrubs blocked anyone that might view from a trail on the opposite side of the creek, but once near the trees, pretty much in the wide open. I knew there was a chance of a hiker, I ignored the risk. I feel tingle all over and my erection throbbed vigorously as I grip the tree and ease myself up into position to climb. I pull myself up slowly clamping my thighs together, squeezing my erection slightly and upwards, then releasing with precise timing continuing for several minutes then increasing in intensity as the feeling begins to build. Prolonging and delaying to make it last longer, sometimes taking short risky walks down the trail and back. This went on for some time. Ejaculating 12 feet at least, it went on for as long as I clung to the tree. It was when I was finished I heard someone call out my name from a few yards. I recognized the voice. My friend emerged from the shrubs where he hid, secretly watching me, His prank to sneak up on me got him an unexpected naked sex show. He must have followed me curious to find where I might be going alone. He asked me what I was doing over and over, but I was so embarrassed I could not answer. The lewd and deviant nature of what he just saw me do . Ejaculating 12 feet at least while clinging to the tree. He stood there watching me fumbling with my clothes while my penis was still hard. I dreaded returning to school the next day.