I used to work with this older woman that loved to tease me. I was in my 30's she in her 50's. she did it with everyone but I seemed to be only one to appreciate it. She was a little chunky, but nice figure. She would brush her chest up against me when I was sitting at my desk. Her bras seemed loose so I could feel her chest swing and brush over my arm if she reached for something. My favorite was watching her giggle as she walked towards me. On good days she would manage to bend over a little over my desk giving me a great down blouse view.
One day we had to work together on a project. I was making a template for her to use. I had one of those hanging keyboard/mouse drawers under my desk. As I was showing her the template she would be leaning into me, touching my arm and sometimes my thigh. I was getting rather aroused. Then she reached over to my mouse. Her forearm was on my crotch. She started moving the mouse around and instead of just using her wrist, she was moving her forearm. She felt that I was getting hard and was using her arm to pet my dick.
I would twitch my dick and she would press her arm down onto me. This went on for a few minutes.
I couldn't take much more so I pulled out my dick and moved myself around so to rub up against her arm and eventually I shifted over to where the mouse was.
She grabbed the head and started to palm it as if to be moving the mouse. Occasionally she would grip my shaft and give me a few tugs. The excitement of it all had me oozing pre-cum. She gripped me firmly and started tugging and while her thumb was rubbing in the pre-cum onto the head. I couldn't take it any more and came all over the mouse desk and floor. I did everything I could not to make noise. She nearly sent me through the roof when she used my cum to lube my head and tease it.
As I composed myself and started to put things back into place, she lifted her skirt and dried her hands on her inner thigh.
Training was over but the teasing just got more intense.