"Mike.. I-I think we...." she murmured faintly. Doubts about the whole bet beginning to tug at her conscience.

Still lying with her wrists pinned above her head, she watched wide eyed as he struggled with one hand to ease his jeans over his hips. He wrestled them over his trainers and tossed them triumphantly to one side. He was still kneeling beside her and her whole field of view was taken up by the swollen bulge beneath his underpants. He hooked one thumb into his waistband and wriggled his pants carefully past his hips and over the swollen bulge that seemed to pulse with a life of its own.

Sammy gasped with shock as Mike's penis sprang free of its confinement. It bobbed and swayed menacingly a few inches from her face. She tried to cringe back from the outrageous sight, forgetting to breath in a sudden heady combination of surprise, disgust and fascination. The swollen shiny head of her brother's cock swayed, glistening with the slippery secretions that seeped from it, threatening to drip transparent fluid onto her face.

"Wha-what's that?" she gasped breathlessly. "Get it away from me - it's leaking!"

"That," said Mike proudly, "is my cock. A bit bigger than two inches eh?"

"B-but how.. I mean it's so... how did it grow so quickly?"

"Uh uh!" he shook his head, "I'll answer your questions when you admit you've lost the bet."

Realisation cut through the confusion and hit the little girl with sudden clarity. She had lost. She had been so sure but she had been wrong. And the bet! She would have to remove her panties and allow her brother to examine the most private and intimate parts of her body. To allow him to see what nobody except her mum had ever seen. She was going to have to let him study her vagina as closely as he wanted and there was nothing she could do to prevent it from happening.

As if it was all a dream, Sammy nodded and accepted that she had lost the bet. She knew that what would follow was inevitable but the few seconds that she hesitated seemed like a life time. Her voice quivered as she tried to speak calmly, not wanting to betray her reluctance to honour her word.

"Y-you won't do anything, will you, Mike?"

"What d'you mean? Like what?"

Sammy bit her lip, trying to suppress the tears that threatened to fill her wide frightened eyes. She really had no idea what he might do but she had an uneasy feeling that there was more to this game than just looking.

"You just want to-to look, right?"

"That's all - what's the big deal? You've already seen me and I didn't even lose the bet."

Sammy had to admit to herself that he was right but she couldn't rid herself of the nagging feeling that Mike had actually enjoyed showing off his newly grown cock.

Mike released her wrists and allowed her to lower her hands.

"Okay," he nodded, "I'm ready."

Sammy's small hands moved downwards, with slow reluctance, to the waist band of her white panties. Her trembling fingers grasped the thin cotton clumsily and began to draw her panties over her slim hips. She stifled a faint whimper as her panties cleared her hips and revealed the plump swelling of her immature mons. Mike held his breath in eager anticipation as the little girl's shaking hands tugged her panties past the tops of her thighs, exposing the tightly closed cleft between her smooth pussy lips. She stopped with her panties at mid thigh.

"All the way, Sammy," said her brother softly. "I can't see a thing like that."

"You can see alright," she protested, "I'm not taking them right off." "That was the bet," insisted Mike. "You agreed that you'd take them off if you lost."

He was right and the nervous youngster had no argument. She tried to tell herself that he had already seen everything, so what difference would it make but she knew, in her heart, that there was a difference between the accidental glimpses that she had occasionally allowed her brother and deliberately exposing herself to his inquisitive gaze.

With a sigh of despair she decided to give him what he wanted and to get it over with as quickly as possible. She wriggled her panties over her knees and struggled to pull them over her trainers. Mike took her foot and helped her to disentangle the flimsy material. As he tugged her panties free, he pushed her foot to one side so that her slim legs were spread widely apart.

Sammy allowed her head to drop back onto the grass and closed her eyes, wishing the whole ordeal would go away. She could feel her brother's gaze burning into her exposed vagina as if it was physically touching her. Despite her shame and embarrassment, she felt excited at the thought of his eyes fixed on the point between her thighs. He might call her a kid but he clearly considered her grownup enough to be interesting.

The fluttery tingling in her loins was growing and Sammy felt more moisture leak from between her thighs. She wriggled in embarrassment, knowing that Mike could not fail to notice her predicament.

"Mike, I-I think..." her voice was barely audible, and Mike had to strain to hear her.

"Think what, Sammy?"

Her eyes, already closed tight in embarrassment, squeezed a small tear from under her long dark lashes.

"I think I've- I've wet myself." she said miserably.

Mike leaned forward and stroked her wet cheek gently. He kissed her forehead and murmured gently to her.

"You haven't wet yourself, you plonker. That's what happens when a girl starts to feel aroused."

"Aroused?"

She knew what the word meant - sort of like waking up - but she'd been awake for hours. Was this something she needed to know about? If what Mike said was true, she wasn't happy about wetting herself every time she woke up.

"Sexually aroused," he said, seeing the puzzled expression on her face.

"You might not like the idea of me looking at you, but it seems that you're excited about it."

Sammy opened her eyes cautiously, still embarrassed at her vulnerable position but curious about this new information.

"I'm not excited," she protested, "It's really embarrassing lying here like this while you stare at me. There's nothing exciting about that."

"I wouldn't want to stare at you if you weren't so pretty."

"Well I can't see what's so pretty about my virg- vagina."

"Because you're a girl and you're used to seeing it," said Mike.

"Weren't you excited when you saw my cock?"

"I don't know. I was surprised at how much it's grown," she admitted.

"That happens when a man is sexually aroused," explained Mike. "Don't you know anything about sex at all?".....(cont)