Now he forced that hand to stop pumping his cock.

His fist ground to a reluctant halt, like a train grinding to a stop on the tracks. His prick remained hard, a fat tower of prick meat jutting out from his stationary hand.

He was trying to stuff his cock back in his pants.

His cock was too big and rigid to fit. It hurt when he tried to bend it. He grimaced with pain and groaned with mortification.

Then he noticed that Brenda was grinning. At least, she isn't shocked, he thought. She hadn't run off in horror or started screaming.

"Hi, Jimmy," Brenda said, friendly as could be.

Jimmy, flustered, nodded at the girl. He saw that she was staring right at his hard-on and that there was something strangely akin to interest in her eyes. There seemed to be a bit of regret, as well.

It was true. The girl was sorry that she had interrupted Jimmy's jacking off by her involuntary gasp of pleasure. She was disappointed for she had been looking forward to watching him shoot his cum-load. She was normally rather a shy girl, but she felt bold today. After all, it was Jimmy who had been caught abusing himself. Why should she feel embarrassed?

"Don't let me interrupt anything, Jimmy – you can go ahead and finish what you were doing."

He gaped at her in amazement.

"Go ahead," she urged.

"I – well, I can't – with you watching!"

Brenda frowned. She guessed it was a case of the observer affecting the observed, like she'd learned in science class. But she was very disappointed. Then she brightened. Again she reasoned that she had nothing at all, under the circumstances, to be ashamed of.

"It's okay – I was, too," she said.

And she moved out from behind the tree and let the amazed guy see that her skirt was up, her panties down and her hand cupped over her pussy. Jimmy gulped as he gazed at his first naked pussy. His hand gave his prick a pull, automatically.