“You know it,” Maggie said, rolling over and leaving me with one of two choices. I could either reach over and around Holly to help with the lotion or I could move to the far side of my sister. As much as I liked the first idea better, that felt presumptuous, but I didn’t like the idea of moving because I didn’t want to show off my hard-on. I stayed put until Holly ratted me out.
“Aren’t you supposed to help?” she asked after drawing a zigzag line down Maggie’s back
“I guess,” I said, standing, covering my hard-on with my hand, and moving to Maggie’s far side. I tried positioning myself so my prick was still hidden. Lying on my front, I smeared lotion across my sister’s shoulders, keeping it as platonic as possible. That worked until Holly drew a big line across Maggie’s tight, tiny butt and another line halfway down each of her thighs.
Holly didn’t hesitate smearing the lotion across Maggie’s ass, including between her buttcheeks and lower. “Mm,” Maggie said, squirming and parting her legs farther apart to allow better access.
“I love how smooth you feel,” Holly purred, really working her hand between my sister’s legs while I tried keeping my hand to the outside of Maggie’s bare ass. Again, Holly noticed. “I think you missed a spot,” she said, giving me a whimsical smirk that I recognized as a dare. “I know she’s your sister, but she’s still a girl, too.”
“Better?” I asked as my fingers slipped down and around the curve of Maggie’s ass.
“Getting there,” Holly said, watching what I was doing. “Pretend she’s me.”
I nodded, knowing what she wanted to see. Maggie laid perfectly still with her ass poking partway in the air and her legs open for whatever might happen. Keeping my eyes on Holly’s naked body, I allowed my hand to slip between my sister’s legs until I felt her pussy. “Oh baby,” Maggie moaned, making it weird. I rolled my eyes and moved my hand to her thigh. If nothing else, I had done it. I had touched my sister’s pussy, though I had kept my eyes on Holly’s perfect body the entire time.
We finished her calves before laying down again, all three of us laying on our stomachs, which suited me just fine until Maggie said, “You need to roll over.”
“Why?”
“You’re going to sunburned your ass.”
“No I won’t,” I said, knowing I already had a good base tan.
“I’m serious. Your ass is getting pink.”
Looking over my shoulder, I strained my neck around until I could check for myself and saw she was right. My shoulders, back, and lower legs might be able to take all the sun I could give them, but not the white flesh of my ass. “I should get dressed,” I said.
“No, you should roll over and work on your front.”
“No way,” I said, knowing the show I would be giving them.
“We’ve already seen it,” Holly said.
“I know,” I said, stalling for another answer that I couldn’t see.
“If you do it, I’ll put the lotion on you,” Holly suggested and that sealed the deal for me. No way was I going to refuse an invitation like that.
“Just you?” I asked.
“Does it really matter?” she asked.
“Maybe,” I said, still feeling self-conscious about showing off my hard cock to both of them. It was one thing feeling hidden beneath the gently swirling waters of the creek. It was another thing to lay on my back in the full sun where they could both watch it throb with need.