Emily takes it on the cheeks.

Emily is grinning broadly as she gets in the back of the Rolls and drapes herself across the policewoman's knees. She reaches back and pulls up her black skirt, exposing her bare ass. Looking up at you she winks and her green eyes are shining in anticipation.

"Six strokes will be sufficient, officer...?" you let your command finish with a question.

"Doherty, ma'am, Erin Doherty," the cop replies.

Erin's right hand strokes Emilys firm rounded ass cheeks for a second before she delivers a slap. Emily lets out a little squeal on the first stroke. Two more follow quickly one to each globe of Emilys proffered rear. Emily is panting and squirming her crotch on the police officers lap. You rub your clit firmly with your middle finger as you watch the two women. Two more blows fall, lower this time across the backs of Emilys thighs. Her beautiful ass is shining redly from the first slaps. You notice Emily part her legs and push her ass up towards Erin, so her puffy vulva is offered as a target for the sixth and final slap. The last blow hits the visably wet pussy lips and Emily squeals again.

Without any prompting, Erin pushes two fingers into Emily's sopping slit. Emily is already close to the brink and after only a few thrusts of Erin's fingers she orgasms.

"You've done this before, havn't you officer Doherty?" you say.

"Not since college," Erin answers. "I always told myself it was just a phase I went through, but I never got turned on much by the guys I've dated. Now I guess I know why."

"I should be getting back to my patrol." Erins **** is obvious. "I have tonight free if you have no other plans."