Masturbation technique requiring two fully functional hands. The hand on the bottom is twisting one way, while the hand on the top is twisting the other, like a pepper grinder.
"Dude, I whipped it out in Wal-Mart the other day and gave myself a Bovarian Peppergrinder until I came all over the 5.99 DVD rack!"
by Robert Ramathorn October 23, 2007
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