I jack off at work all the time. If I"m major horny at work, my mind is not focused on the task at hand, so getting off helps me to get back to the job at hand with no distractions.
This is a pic taken of a major pre-cum spot I developed at work one day after a lengthy hot private chat session in the chat room:
http://www.lpsg.com/members/hj1958/albums/random+shots/803411-major-pre-cum-wet-spot.jpg
I had to sit a my desk for close to an hour before it dried!!:tongue::tongue: