the only technically "risky" place i've masturbated in was the showers here in my dorm building. so, my answer is the same as BCG's, lol...and it is really hard to keep quiet!

risky plces
 

riskiest place for me was whilst driving, i see loads of women driving who i believe are doing the same, am i wrong?

I replied to the other thread like this but I remembered a couple of other areas I did it.....in a public park and at a couple of public lakes

In the library while in collage. It was a great study break!!!

In the unlocked supply closet at my office....sweater up, bra down, tits out, skirt to my waist, nylons to my knees.....so hot!!!

In school bathroom, many many moons ago,in a bean field, while walking beans, at work in the bathroom, and many other places. Now I do it for my wife!!!!!!!