Terry surprises John

John pumped his cock into his fist, and looked up at the window which Laura occupied.

"Hi there, big boy", came the throaty voice of Terry from only a foot behind him.

Jumping out of friend, John yelled 'JESUS CHRIST!'. He turned to see Terry's head and bare chest above the fence. Her hands were on her hips. His eyes couldn't leave her glistening tits.

"You appear to be enjoying yourself", she said with a raised eyebrow. "Who's the piece of ass in the window?"

He was full of embarassment, but confessed "I.... uhh... I mean.... it's my wife's sister, Laura"

"Ahh.. outside jerking off thinking of the forbidden fruit, eh? You want to fuck your wife's sister... Don't look so glum, your secret is safe with me.... as long as..."

She reached over the fence, and pulled him powerfully against the wood. His hard dick protruded through a gap. Terry dropped to her knees, and gave the head of his cock a flick with her tongue.

"If that cunt wasn't up in that window, I bet it would have been me you were jacking off too.....", Terry said, "You want me to suck you dick? Does your dick need some attention?"

Without giving him a chance to respond, her mouth engulfed his cock with one fluid motion. She deep throated his rod and cupped his cum filled balls with her petite hand. Her mouth then left his dick with a loud wet popping sound.

"You are one naughty boy. You know you aren't supposed to covet your neighbor's wife.... I do belive this counts."

She returned to his dick, savagely attacking it with her mouth. Sucking and slurping sounds filled the air. The fence didn't allow John to see Terry, but his mind imagined her squatting with her legs spread, one of her fingers deep in her wet pussy. Her head bobbing on his cock.

Waves of pleasure drove through him, she was the most skilled cocksucker he had encountered. He closed his eyes, and prepared himself for the large orgasm that was about to arrive.

Sensing her man's climax, Terry's pace quickened. Large spurts of cum filled her mouth, and she allowed his cock to penetrate deep into her throat. Wads of cum spilled into her mouth.

She stood up, and put a finger to her lips and kissed it. She then touched that finger to John's mouth. "There you go stud, that should hold you off for awhile"

She turned and began to strut back to her house, her tight ass waving goodbye. Halfway, she turned to call out "Taylor is off to work tomorrow, right? If you still want to fuck her sister, why don't you bring her over my house tomorrow and the three of us can go to the mall.... I'll help you get in her panties. Or you can just come over and let me have you to myself."