1 definition by Miigoss

Top Definition
1) Used to describe a lengthy period of sexual intercourse.
2) The loud slapping sound of testicles being thrust against the outer vagina.
I was on a long sac with that chick last night, man.
#longsack #long sacing #longsacking #song lac #sac smackers
by Miigoss June 19, 2008
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