I have never heard this practice called by any special term and I have participated in this activity. So, I tried again to day to discover a "Name" for this practice and did not find anything today either.
Perhaps you should contact hXXp://www.glovdcopsf.com/home.html and ask this question of him. If there is a Special Term for this practice he will surely know the answer. glovdcopsf is a really nice guy and allowed me to post his Beginners Guide to this Leather Forum. Then you can post his answer here for our edification
to not have an answer for you and frankly not sure one exists but if anyone can help us out it would be glovdcopsf.