I Do it whenever however
I have the urge to m********* as an when ever i feel the need it really doesnt mater where i am. I was at work on a night shift and my colleauge popped out to get some food from the Local Chip shop, I couldn't resist as it was just me and her on shift I lifted my skirt and removed my knickers and sat with my legs open and masterbated frantically i was so wet and h**** i c** in seconds...I did it twice more whenever she went to the toilet or on a walk round.
I was sitting in the bank waiting to see an advisor and i made myself c** using the seam from the inside part of my jeans inbetween my legs by letting it rub against my p**** when i crossed over my leg and rocked my leg ....I was in complete control knowbody ever knew.
I the way to a wedding and was sat in the back of a friends car with two boxes of wedding presents on the back seat next to me and i hasd a bouquet of flowers on my lap i was wearing a short dress and managed to somehow slip my finger deep in to my p**** and enjoy the duration of the 30 minute journey without being caught red handed...I really love it.