Carol should not have been surprised at seeing her sister stroking Bobby's cock and she wasn't really, she was excited. If any mother would jack her son off, it would be Julie, Carol knew. For a moment Carol thought of her own son, Brad, who was in school and the reason she was here in Julie's house now.

When her son called her to say that Bobby had not shown up in school that morning, Carol had first thought he was ill. Julie lived only a block away and it was a simple thing to find out. She and Julie visited almost daily and the two boys were not just cousins, but the closest of friends.

She now leaned against the doorjamb, her knees weak as her legs shook while she watched as her sister cupped Bobby's young balls, tugging at them gently, her other hand moving up and down his hard cock. When Carol saw Julie lean over and dart the tip of her tongue out, she almost gasped aloud. She saw Julie flick the tip of her tongue across her son's cock, licking at the smooth young head. Bobby groaned as he stared down at his mother's face, his expression pure pleasure.

Julie gazed up at her son as she swirled her tongue about the head of his cock, her ass lifting. Julie was fully dressed, wearing a white blouse and skirt, nylons and heels. Carol knew Julie seldom wore panty hose, preferring nylons with a garter belt to hold them up. She wondered if Julie had panties on because she knew sometimes Julie went naked under her skirt.

"Put it in your mouth, Mom," Bobby groaned. "You promised, Mom! You promised you'd put my cock in your mouth!"

"Mmmmm, I know," Julie cooed softly, her lips lightly kissing the head of her son's cock. "And I always keep my promises, don't I?"