She really saved me that day.
School was over and my best friend and I stayed to help our favorite teacher out. They both went to get some things, and were taking a very long time. I had already finished what the teacher asked me to do, and I was getting really bored. My mind started wandering to my friend because I like her and she's hot. Of course I got hard. We've been best friends for many years. Anyway, I started masturbating and I was really into it. My best friend bursts through the door and she saw what I was doing. She said in a rushed voice, 'WHAT THE HELL ARE YOU DOING?? MRS.K IS RIGHT BEHIND ME! YOU CAN'T HIDE THIS YOU'RE GONNA GET SUSPENDED!' I didn't have time to put my member away and we literally had 2 seconds to think. Right as our teacher was coming in, she sat on my lap and started to pretend to read a flyer with me. I felt so bad for her because I got even harder from my member being so close to her lady parts. Because of the way she was dressed, there was very little clothing between us. She seemed uncomfortable and I was pretty much in heaven. About 20 minutes later, our teacher went to the office, which on the other side of the school, so I put my member back in my pants and thanked her for her quick thinking. I wasn't hard anymore when the teacher returned. My friend still wants to know what I was thinking about, but I don't think I could tell her. ;) She still teases me about it though. Now every time I jack off I think of that amazing, risky day!!