The big, hard cockshaft swelled into her fist, and the knob began to pulsate. Judy got plenty excited, playing with the animal in public. Her fist flew up and down at a great rate, skimming his prick, dragging the furry pelt up and down the throbbing prickstalk. She knew that the dog was going to shoot his hot wad very quickly. She lifted the hem of her skirt so that it would not get soaked with jism. She leaned towards the beast, her fist pumping steadily.
The dog's cock went off like a fire hose in her hand.
The first creamy spurt flew straight up in the air and hung suspended for a moment, then dropped down, splattering on her naked thighs. She continued to pump away, emptying his cum-loaded balls in spurt after spurt.
"Nice?" she asked.
"Wowf," said the dog.
The light was green. Judy wiped her hand delicately on a Kleenex, put the car in gear and drove off. It had been no momentous occasion for the girl since she was well accustomed to masturbating her pet.
Little did she know the profound effect that her act was to have on a total stranger who had been watching from a window above.