A dildo with a sac mounted on the back, which is then cut in half verticly and is commonly used as a handle.
commonly used by lesbians and niggers.
Jenny!, put that half sack in my ass.
by SacDog unL337 December 30, 2007
n: half 8th of ganja, usually priced at $25 depending on availability and quality of the herbal
I didn't have the money for a full 8th so i just bought a half sack
by jd May 02, 2004
A half ounce of marijuana, at the time of this writing priced at $50-60.
Let me get a half sack of some of that green.
by starsonmyarms July 23, 2006

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