A descriptive name for a male with only one testicle in the bag of skin hanging below his penis (the scrotum).
Boy: “Hey dad, why do you call Cousin Mike ‘half-sac’?”
Dad: “Because he’s only got one nut son!”
by JJtheJackass June 12, 2019
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A term commonly used in BC which means a 12 pack of beer.
"I just need to pick up a half sac before the game"
by ToughGuy8 August 15, 2011
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