See 'Embarrassed' & 'Sis's first time'
Even though I was married for years I still enjoyed wanking my knob. Most of us have sexual fantasies we think about as we spank the monkey.
My best one involved the time I asked my 20-year-old sis if she was still a virgin. She was engaged to this guy whom I just met and so after we were alone, I asked her how was the first time? She looked at me and replied it was awfull. I wondered why and she said because he was huge! She said she could put two hands around it and still have room at the top. Her fingers couldn't touch her thumb. They did get married, live happily, and I have some great masterbation fantasies of my bro-in-law doing my sister. Sometimes I think of him doing my wife. So a big 'Thanks Sis'.