I had walked a trail through the woods and then cleared away any branches, stones or rubbish, this was going to be 'our bike trail', I had put red and...green ribbons on some trees to mark the trail and tried it, slowly at first then at a good speed. There were no big slopes but I had found 'the dip' and left it as it was.I poked my head in my sister's room to see if she was awake, she was, sitting up in bed with just a sheet covering one lower leg the other knee propping a law book she was. I would stop, but she would say that she needed to get over her fear of having someone on top of her during sex. Once I tried to pull out, but she just wrapped her legs around me and wouldn't let me go until long after I blew my load into her. She would say not to worry that she was safe.Later on, she got on her hands and knees and said, "Do my butt." What," I asked, sure I had heard wrong.I had a vision of seeing her dad doing her this way."I want you to put your dick up my asshole. I want sex. V.. I was surprised. She had expressed being nervous about being with a girl, especially when it came to returning the favor. I sat up on my elbow and looked her in the eye."Lee, are you sure? I know you are new at all this and I am perfectly happy with just showing you the joys of lesbian love."She sat up and I moved to a sitting position in front of her. She looked at me and said "Yes, I am sure. After what you just did for me, I am definately ready to return the favor. I think you have. "Sit," she patted the bed. Caleb obeyed his mother, running his fingers through his hair, eyes down once more."I uh, I shouldn't have been at that party. It was for younger people, college students. I shouldn't have been in that room. When your dad died, I went nearly ten years without, well, sex. I wanted another baby and figured I could have sex - perhaps a large amount of it - and get a baby in the process. Then I'd be done, back to being a single mom, this time with a little baby. It was.