When my younger brother reached the age of thirteen. I was sure he knew how to jerk off because he'd drilled holes in the bathroom door to watch me. I plugged the holes with soap at first but the thought of him getting turned on by my naked body was also a turn on for me. The toilet seat faced the door, I knew he watched me sitting there, so I'd spread my legs wide and sit there for a bit imagining him jerking off.
I surprised him one day when I opened the door sooner than he expected. His cock was in his pants but hard and long. Longer than my boy friend's and he was a lot older.
I decided it was a perfect time to confronted him.
'I know you've been peeking at me through the door,' I said, ' and I'm going to tell mother.'
He was more scared than I thought he'd be, so I said I'd think about it if he'd let me watch him touch himself. He didn't know what I meant so I told him how guys pretend to do it to a girl by pushing it in and out of their hand.
He took out his prick but it was soft by this time. I showed him what to do and he tried without getting hard. He was still scared I guess.
I was so hot by this time and I wanted to see him do it in the worst way. If this was his first I wanted to be there to see it.
Of course I knew how to make it hard again.
I lifted my skirt and pulled the crotch of my panties to one side. His prick got hard in a second. I held his wrist and told him to hold on to his prick. I moved his arm back and forth a few times. That was enough. He came for the very first time right between us. He was scared at first but when he realized how good it felt he started to do it all by himself.
I had him hold off for a while and when he didn't even get soft, I took a chance and suggested we do it to each other. I was afraid to wait and let him feel guilty and I knew he was still hot.
I told him to reach up my skirt and feel inside my panties. He fumbled a lot but he finally slipped one finger in my crack. It wasn't the fingering off like I do to myself but his random searching and poking made me hotter than I'd ever been. I tried to hold off but I came a lot sooner than I wanted.
We do it a lot even now. We're both older and married and it's easy to get together because we live near each other. We sometimes tease each other for a long time before it's over.