Karen had spent the night with me.
I woke up the next morning to my balls in a wet squeezing place and pressure against my asshole. I realized that my balls were in Karen's mouth ((I love my balls in a mouth) and a finger up my ass reaching for my prostate. I was not that experienced at anal insertions then and it felt strange and erotic at the same time. My cock was rapidly hardening as she swished my balls in her mouth and fingered my ass.
Then she plopped my balls out of her mouth and pulled her finger from my ass. She rolled up to straddle me and reached to insert my cock in her pussy. It only had the tip in and I could tell that she was not comfortable. She rolled off and said she was to sore from last night to fuck like that. She asked if I would fuck her ass instead. I had never fucked an ass before but immediately agreed. Karen ran to the bathroom and came back with a tube of hand lotion.
She lubed my cock up with the lotion and got back on top of me. Her fingers grasped my cock and slowly pushed it against her asshole.
It was extremely tight but she slowly worked it into her ass until it popped past her sphincter. She gasped as it slid all the way into her ass moving slowly back and forth my cock moved in and out of her ass. It was so incredibly hot and tight.
It was so hot getting to fuck a really tight ass and soon I could not wait any longer and began to pump cum into her ass. It felt so incredible as she clenched my cock with her asshole.
After a couple of minutes her ass released my cock and it slid out of her ass with a trail of brown cum (I did not know about clean anal tricks then). She jumped up and ran to the bathroom. After a couple of minutes I followed as I really had to piss. She had just finished up and got up from the toilet. She wiped my cock off and then held it for me while I pissed.