The raising of one foot onto an elevated surface, arching of the knee, then reaching under with one hand in order to perform sexual acts upon oneself. Traditionally performed in a seated position with a slight hunch in the back. Not recommended for those suffering from lower back pain or chronic injuries.
I hear Steve put his back out again knocking calf last night. We really have to find him a girlfriend
by Renshaw March 09, 2008

6 Words Related to Knocking Calf

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