Chapter 3

"I think the birthday girl should go next," Tracy said, looking over at Sandy.

"I don't know. I'm still kind of nervous," Sandy said. "How about you Sabrina?"

'Wait a minute, ' Adam thought, 'Did she just say Sabrina?'

Sabrina looked over at the softening cock and then back at Sandy. "Alright," she said "I'll do it."

Adam raised an eyebrow. 'That sounded just like... ' but before he could finish that thought, he felt warm moisture surrounding his penis. His sister was sucking his dick. He was too surprised to think clearly. He knew he should have backed away and ran out of the building, but something told him to stay. He felt his dick start to stiffen as his sister licked the head of his penis.

"Wow," Sonya said, "I didn't expect him to be ready again this fast."

Sabrina took as much of her brother's dick in her mouth as she could, tasting the saliva Sonya had left on it.

'Is this really happening?' Adam thought. 'It feels so good, but Sabrina would kill me if she knew it was me.'

Sabrina's hand slid up and down the slippery shaft as she sucked on the tip.

'But how's she going to find out?' Adam reasoned in his mind. 'She has no idea whose dick she's sucking.'

Sabrina took her mouth off the cock and pumped it vigorously. She let some saliva pool in her mouth and then let it drip from her mouth to his cock as she continued jacking it off.