A fork of Rural Dictionary
The vagina of a woman after years of overuse. One would imagine it has become so saggy and loose it hangs low like a sack.
It may also be used as a direct insult to a noun.
That Janet is such a whore. I bet she's got a massive slutsack.
You are a disgusting slutsack!
Bigger insult than 'slut'. Someone who has really been around the block. *wink wink*
The preppy girl at your school is a slutsack.