Porter tied the panties snugly around my hands--not enough to hurt, but snug enough that my hands wouldn't accidentally come free.
Porter's eyes fell on my tits. "Looks like you're enjoying this."
I blushed. My nipples were hard as ice. "I-it's just the c-cold water." At least, that's what I told myself. I was freezing, and with my skin still dripping with water, the cold air of the night was like sharp knives scraping down my skin.
"Of course," Porter said. He reached over and pinched my right nipple. I squealed, pulling away from him, but not stepping away. He stepped up to me, pressing his body against my back. His hands wrapped around me and grabbed my small tits with both of his hands. I moaned in pleasure. His hands were warm, and I found that I didn't want him to stop. I groaned in disappointment as he pulled away.
"D-does my time start now?" I asked. Crap. What did I just say? Was I really going to go through with this? A whole day of being subject to Porter's whim? He would never hurt me, but it wouldn't stop him from having some fun, either.
He grinned. "Not quite," he said, starting to guide me up the slight hill of the pond. In his other hand he held the cardboard box. "You lasted seven minutes, but our deal was for ten. I think you need to make up for those three minutes."
I gawked at him. Our deal? This whole thing had been my idea! If those kids hadn't shown up nothing would have happened!
"What do you mean?" was all I could say.
"Forfeits. I get to pick three things to do to you, one for each minute. I'll even let you suggest what they should be, but it's my decision. Only after those three forfeits do we start your time."
My heart sank. How had this gotten so far out of hand?
We approached the kids' playground in the park. He guided me to the monkey bars. "I'm going to tie your arms to the bars and then I'll tickle you for five minutes."
I groaned. "That's not fair! You know I'm ticklish!"
"Of course, I do," he said with a big grin. He was enjoying this. Having his childhood crush naked, exposed, and completely at his mercy. "Now beg for it."
I whimpered, and yet, at the same time, I felt a flutter of excitement. The whole appeal of exhibition, the whole reason I wanted to skinny dip in such a public place, was because of the thrill of being completely vulnerable. As terrifying as being almost caught was, it was still exciting. Porter was just extending my experience.
"Please..."
"Please what?"
"Tickle me. Tickle me mercilessly for five minutes."
He grinned, obviously pleased at the little addition. I wasn't even sure why I said it. It just slipped out of my mouth.
He tied my wrists to the bars using my panties and my shirt. He tried to bunch the shirt up so the height from my wrists to the bars was roughly equal, but there was definitely a slight difference, forcing me to stand on my toes. The feeling of an entire leg on display while another was planted on the ground was intoxicating, and I knew the position I was in stretched my privates slightly. With my pubic hair still wet, there was nothing to impair his view.
"Wait...somebody will hear me laughing." Technically, what he was doing wasn't anything different than skinny dipping, aside from the absence of water. Despite that, it still felt completely different, like a whole different level of exposure
"Well, then don't laugh," he said. Without warning he attacked me, running his fingers up and down my stomach and sides. I lasted maybe two seconds before bursting out screaming and laughing. I tried to breathe, but every ounce of oxygen was bursting out of me like a boxer punching me in the gut. He moved to my chest, squeezing and kneading my smaller breasts.
"Please! Stop!"
My precious words were wasted as he moved to my back, running down my spine. I screeched. There was no way anyone within a mile of us couldn't hear me. Someone would come to investigate!
"Stop! I-I'll do anything!" I couldn't let anyone see! The pond at least covered some of me, but out here I was completely exposed. My crotch was burning, and the thought of someone witnessing me have an orgasm was too embarrassing.
He slowed, but didn't stop. His hands clenched my big butt and squeezed, letting his fingernails scrape lightly against my skin. "Anything?"
I squealed at the sensation, which turned into a moan. Crap, he knew all my weak spots."Y-yes! I...I'll let you watch me take a shower! Please!"
He stopped. I groaned, gasping for breath. One of my hands, the one bound by my panties, had come free in all my thrashing, though it hadn't even registered with me in the moment. I stretched it across my chest.
"I suppose that will have to do," he said. I realized that he needed a reason to get me out of the park, or we'd get in trouble and the night would end. I had just given him a reason to not only leave the park, but also to get even more embarrassment out of me. It was a win-win, at least for him.
He untied me, and then picked me up and walked me to his car. He laid the passenger seat as flat as he could and deposited me, completely stretched out on the seat like a trophy. He reached over and buckled me in, the sensation of being completely naked while wearing a seatbelt was so strange and yet so stimulating. I couldn't convince myself that the wetness in my crotch was only from my dip in the pond anymore.
Despite my embarrassment of being completely naked in Porter's car, I started to nod off, the physical exertion of swimming and getting tickled catching up to me. I lost track of time and only awoke when we started to pull into my driveway.
"Have a good nap?"