A sexual manuever in which the male grips the base portion of the penis with a fist, allowing only the head of the unit to penetrate the vaginal cavity, at which point the individual removes the hand to surprise the unsuspecting female party with more the she originally bargained for.
She thought it was small, till i gave her the Half-shaft!
by iamhendog September 29, 2007
5 Words related to Half-shaft

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