And here I was, messing with her current BFF.Only I wasn't messing with her friend. I wasn't really doing anything except standing there as the music ...played."You've got to move to the beat," Heather told me. She demonstrated, and I tried to copy her. I probably should have been watching one of the guys who were dancing, instead of learning to dance by mimicking a girl, but, well, I was enjoying watching Heather. After a few minutes, she leaned in towards me and said, "There you go, you're doing. I immediately placed gentle kisses on her pussy lips and she moaned as my lips touched her. I teased her with my tongue and she jumped when I rubbed against her clit. "Oh, Mark," she cooed. "I'm loving this."I kept licking her as I explored her vagina with my tongue. She ran her hands through my hair as I repaid the favour of glorious oral sex. My mother was moaning loudly as I picked up the pace and paid more attention to her clit.Just as she had done with me, I took a moist finger and teased. She walked away and I heard her going through one of her drawers. I saw out of the corner of my eye that she had put on a nice size strap-on dildo. I was a little afraid at first, we had never done anything like this before. She moved in front of me and said, "Suck my dick like I've done for you." I really didn't know if I wanted to do this or not and hesitated. It was a mistake. I immediately felt the sharp pain of her riding crop on my ass. "SUCK MY DICK" she said. I immediately wrapped my. Sharon's pussy was really wet, I mean just running with juices. I had drawn her pussy lips apart and was tonguing up into her hole, running my tongue around in a circle which really made her hot. She was moving her hips back and forth and I'm sure she had an orgasm from the moans and thrusts she made.After a while, it seemed like we had all pleasured each other sufficiently and we just kind of broke into pairs again. We decided to break apart and go to different bedrooms, Dale and Sharon would.