"Mom!" Bobby groaned, his half-naked body shaking. "I don't think I can hold back! It feels like I'm going to come, Mom!"

With a muffled squeal, Julie began to suck faster yet at his cock. She went up and down frantically, twisting her head from side to side as her lips squeezed the hardness. She moaned deep in her throat and Carol watched her sister struggling to bring the hot come juice out of Bobby's balls.

With a groan, Bobby came.

Carol knew he was coming because she saw his balls draw up tight, then watched them pulsate. She heard the wet swallowing sounds Julie made and saw her throat working. Bobby moaned and twisted about as his cock flooded his mother's mouth. Julie had shaved her hands behind her son's ass, her fingers clutching the tight cheeks, lifting him up, drawing his gushing cock deeply into her mouth. Her eyes were closed now as her face took on the expression of a woman experiencing the utmost ecstasy.

As Bobby finished squirting into his mother's mouth, Carol finally began to move. She slipped away silently, going through the house and out the front door. She stood outside in the bright sunlight, undecided. She knew she should return home, yet something held her there. A glance at her watch said it was only eleven in the morning. She could return home, but Carol knew that once she was alone in her home, there was nothing to prevent her from stripping her clothing from her now-feverish body and finger-fucking herself raw. But Carol didn't enjoy finger fucking herself, not when she was alone. She stared at the closed front door, her finger hesitating near the bell. Surely Julie and Bobby would be finished now. Maybe Julie was in the kitchen, preparing herself a glass of iced tea, a beverage she drank summer and winter. Maybe Bobby was taking a shower. She found herself forming a mental image of him behind the glass doors, seeing him washing his cock and balls and ass, thinking he was alone. She pictured him maybe sneaking his hand down and jacking on his cock. She shivered.