In the time it took me to put away my plate and turn back to the pull-out couch, it happened again.
Marnie had managed to pull that granny gown over her head, flop down tummy first and pull her elbows against her ribs. I never heard her tell Bobby to turn away, which I found to be unusual.
"Get over here, Slacker," she said. "You get on one side and Bobby can get on the other."
Already sitting on the edge of the mattress, Bobby just lay back and slid alongside his sister.
As I walked over, slowly and frightened as could be, I noticed Bobby's towel had come loose. He was on his side, his arm bent at the elbow and his head propped up on his hand. His cock was lying against his thigh, soft but bigger than mine when hard. How depressing. By the time I crawled onto the bed, he was already brushing his fingers along her spine in long strokes from the base of her neck to nearly the top of her panties.
Despite being tight, one side was stretched over the bottom of her right cheek. Wow.
"Well, what are you doing slacker, taking notes," she said. "Get to work or you won't get a turn."
I couldn't even imagine her tickling me, not even my back. No girl had ever touched me in that intimate a way.
With Bobby working on her back, I brushed my fingertips ever so slightly on the hair at the top of her neck, just at her hairline. I felt her muscles tighten and she shuddered.
"Oh, my God," she said. "Slacker, I never felt anything like that. I am all goosebumps."
Encouraged and calmer, I did my best.
I slid the flat of my hand from the base of her neck and ran my fingers through her soft straight hair. I inhaled: Prell; I wondered if she had the big bottle with the pearl inside.
Inching down to the side of her neck, I tickled softly, teasing her ear.
She responded to our ministrations with quiet coos.
"You guys are killing me. This feels so good," she said. "And I thought you were a pair of idiots. It appears you do have some value."
I brushed my hand over the left side of her back, bumping Bobby's hand.
He did not respond, just moved to her side, tickling his way up from her rounded hip to her rib cage. When he got to her elbow, she moved her arm to the side. With new territory, Bobby ran his fingertips up to her underarm.
"Ooo, Oooo, you know that gets me," she scolded. "I'm so ticklish there."
"I'll stop, then," he said, feigning hurt.
"I didn't say it was bad," she responded. "I just said I was real ticklish there. Of course, you should know that."