Masturbating while fully submerged under water. This can be done with one's dominant hand or the hose end of a snorkel when appropriate. Water rubs date back to the times of the ancient Greeks and can be seen practiced today among all of the world's oceanic cultures.
by Sean_bot September 29, 2010
I was at the town pool on a hot summers day when my junk got water rubbed by an old man's fleshly calf as he swam past me
by Schmorl's Node September 30, 2010