Maybe I was 15. I don't remember exactly. I thought Mom was gone but she came back sooner than I expected. I was on my bed slowly jacking. All of a sudden my mom walked in, calling my name. I grabbed the sheet and pulled it over my penis and turned RED. Mom laughed and said 'sorry to interupt.' She told me to go ahead and finish, then walked away.
Later she called and asked if she could come in the room. I said yes, and she walked to my bed. She asked if I had finished and if everything was o.k. I told her I hadn't done anything, as I was too embarressed. She said 'fine but don't be shy. Masturbation is very natural.'
She said she had noticed stains on my sheets and wondered about them. She reached down and took one of my socks from the floor and told me to finish it off and come in the sock. She left and closed my door. I jacked off and when I came, it was really intense.
The only comments ever made every now and then, were about all the stiff socks I always had in the laundry. What a great Mom!