It was summer and pretty warm that evening so I was dressed in a short skirt, sort of a vest which zipped up the front, black bra with matching thong ...anties and heels. I had already gotten a nice dark tan from lying in the sun. We walked to our respective cars and Rob opened the door for me to get in. Jim did the same for Julie and off we went. Rob suggested that we drive the interstate for a while then find a backroad to perhaps find a place to park and "talk"! We talked some more and partly. With each touch she had brought about more intense sensations than the one before and it seemed there was no escaping her desire. She began to let out her usual little grunts of arousal as she built up the pressure, the vibrator taking closer and closer."Fuck, girl, that's hot," came a voice from behind her.She froze in mid-thrust, her hand still gripping the base of the buzzing vibrator as she looked over her shoulder.Belinda stood there, a wicked glint in her eye as she stroked her tits. “Yes?” “Helen? It’s Kathy. It just left.” “OK,” Helen disconnected the call without further pleasantries and closed her eyes in contentment. “Well?” Kris demanded “Oh, he’s working late apparently.” “Oh!” This was not the news Kris was expecting, however, it didn’t change anything. “Well I’d best be heading off anyway.” He spun to a sitting position and started to get off the bed. “No!” Helen snapped as she sat bolt upright, wincing at the pain it caused in her already tender stomach. “No?”. She gestured at my briefs.'I said take your clothes off.'I put my pants on the bed and stood there feeling a little foolish as "Madame" looked at me speculatively. 'You're in good shape.''Thank you.'She moved towards me and suddenly swung back-handed with the belt which cracked painfully across the back of my thighs. I gasped involuntarily.'What do you say?''Ouch.'The belt swung again, even harder this time. 'I obviously need to teach you how to be grateful.'I quickly took my cue. 'Thank you,.