Kim had been staying with Sarah and me for a couple of weeks. She had caught her husband cheating while they were trying to have a baby. Kim's biological clock was ticking faster and faster, but her husband wasn't as excited about he prospect of having kids as Kim was. To be fair to Tim, Kim had gained a bunch of weight over the past few years. She was still attractive, but certainly not the hot piece of ass he fell in love with. The way Sarah and I figured it, Tim lost interest, but didn't have the courage to admit it. Kim was staying with us until she figured things out. The backstory isn't as interesting as what happened next.
Sarah and I have a fairly exciting sex life. Sarah likes to experiment and her most recent purchase was a set of restraints for the bed. Soft, but secure, wrist and ankle cuffs. I had tried them out a few times, but Sarah really enjoyed being restrained during sex. To be honest I wasn't too interested in using them because I like Sarah on top. Nevertheless Sarah wasn't shy about showing them to Kim.
Sarah had to work on Saturday, leaving me to sleep in. When Kim heard Sarah drive off she came into our bedroom and loosened the cuffs. She then proceeded to fasten each around my various limbs. I was fast asleep and didn't realize anything was amiss until she tightened the second leg restraint. At first I thought Sarah was playing around and moaned, "Not again, I am pooped."
Kim hurried and tightened both of the wrist restraints and said, "We'll see about that."
My eyes shot open as I realized I was NOT at Sarah's mercy, but her best friend Kim's mercy. I begged her to let me go. But she told me I might as well enjoy it. She used a pair of scissors to cut my underwear off, leaving my flaccid penis exposed. I watched as Kim climbed off the bed and began to undress. She wasn't unattractive, but she was big. Her breasts were huge, but her belly was so big it offset any sort of arousal I might have had.
Once she was completely naked Kim climbed on top of me and said, "Sarah tells me you like being on bottom." She began rubbing my chest as her vagina rested on top of my penis. She was sopping wet, ready for sex.
Kim then explained, "I don't want to do anything you don't want to do. If you don't want to make love we don't have to." She began sliding her vagina up and down my crotch, then she reached around behind her back and began massaging my balls. I started to get hard. I tried to argue, but Kim kept telling me to be quiet by holding her finger to her lips and saying, "shhhh".
Kim could feel my arousal and she responded by saying, "That's it, I knew you wanted me." I couldn't help but get harder and harder as her lips wrapped around my shaft running up and down, her fluids leaking all over me.