Sanding Off
The act of masturbating without the use of lubrications such as Vasoline, KY Jelly, or Hand Lotion.This is usually done in the state of hard-on horny urgency. Also if the persons hands are slightly rougher than others. The friction from this would probably cause a rather uncomfortable feeling for some, especially if they are used to masturbating with lube.
So I was watching my next door neighbor washing her car in a tank top and some cut off daisy duke shorts through my bathroom window... I didnt have time to get any lube, so I ended up SANDING OFF my cock.... I have no regrets.