That's when I slipped and allowed a moan to escape my lips. My sister froze and my hart started racing more then her playing had caused. I backed away...as I saw her start to rise. I didn't want to go too fast because if she didn't get up I would be able to hide and if she did I would see her in all her glory even if it meant I would be busted. Then she laid down and started her rubbing again. I was sure she heard me and I was busted but I slowly moved back to see her. She had shifted and now I. I started to finger fuck him sucking harder and faster as I did. Moving my finger in and out twisting and turning them he met each probe with an upward hunch (clearly he had fucked himself with objects before). The fist finger deep inside then the second then the third finger fucking his tight hole and sucking his cock. OMG without any pre-cum he erupted with a load of cum in my mouth. WOW it just gushed out spilling that wonderful thick cum. (guess he 3rd finger did the trick). His cum flowed. That's when I noticed he was not wearing trunks."Where's your swimsuit?" I asked. Jack looked down at his nude form and smiled "I never wear a suit when I swim, I let my boys swim free!" he said lifting his arms and flapping them as if they were wings. I tried to look away but for some reason my gaze fell upon his member. I was transfixed on the 8 inch dong as it swayed back and forth between his thighs. He passed me and sat down on a nearby bench. "Want a beer?" he asked reaching into an ice. Even if he didn't believe them to be telling the truth, he couldn't have turned them away. They were beatiful. Ella and Hailey were identical. 5'7 135lbs, long red, pretty big breasts and nice round asses.Jaime was much taller than her sisters, 6'3' 162lbs. She had long chesnut brown hair. Her breasts were huge, but she shared the same well defined, athletic shape as her sisters.They were all 25, Clark had never met a set of triplets in his life. He also never thought that when hid did they.