Since the topic is masturbation in the office, my own experience may be somewhat different. There was this hot junior executive who used to drop by my office for discussions. After some time our relationship developed from light petting to some serious hank-panky ala Pres Bill Clinton style. This included getting blow jobs from her when she was on her knees under my large office table. Sometimes this happened when I was on international conference calls with my corporate HQ. Those were the days!