1 definition by 123450987

Often refers to someone in baseball with unusually large testicles making it uncomfortable to manoeuvre them self in a comfortable manner. One who is called ' Nardsack' is prone to lash out after making an error.
Team mate: Way to go Alex you really blew it.

Nardsack (Alex): I will knock you the fuck out.
by 123450987 September 29, 2013
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