My son, who I raised alone and spoiled, seemed to have grown up as a child. The other day, when I went to wake him up in the morning as usual, I noticed that his penis had swelled up so much that I could see it even through his underwear. Seeing his erect cock for the first time in a while made me realize that I was a woman inside of me. Since then, I've been playing with my son's cock in secret... doing naughty things...