My wife asked if I could go over to my sister-in-law Cindy's place. She couldn't get her car started that morning. Normal Cindy is a pain in the ass. She will ignore you unless she needs your help. I ended up driving over to see Cindy. I checked the ignition and the car wouldn't turn over.
"When did you last get the battery changed?" I asked her.
She replied that it had never been replaced. I had my tools with me and I pulled the battery out. I went to the auto supply store and got a new one. When I got back to Cindy's I installed the new battery and the car fired right up. Cindy came over and put her arms around me and planted a kiss right on my lips.
"I don't know what I would do without you Greg."
That was certainly unexpected. I drove back home and told my wife that her sister was taken care of. A few days passed and my wife asked if I could go over once more to Cindy's. She had another task for me. This was getting old but I drove over once again. Cindy greeted me at the door.
"I wanted to thank you properly for fixing the battery."
Cindy once again kissed me hard on the lips. Her chest was pressed into mine. I was sort of shocked by her attention. I guess I just got into it and my hands went right to her breasts. Cindy had big tits and I was now rubbing them on the outside of her shirt. Cindy pulled me into the living room and we found ourselves on the carpet getting into it.
Cindy pulled off her clothes and I followed suit. Her tits were bigger than I imagined. Those nipples were large and light brown in color. I lowered my face and started to suck each one in my mouth. Cindy took hold of my raging cock and she stroked me until I was stiff. Cindy then pulled me on top of her body. To be honest, I never thought my sister-in-law would ever get like this. I just couldn't pass up the opportunity.