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Refers to women who which sleep with any man they can for free drugs. Packet refers to the bags that your gear comes in.

Generally to be avoided, but can be fun play toy but make sure you toss it away when the time is right.
That girl Gina is such a packet slut, she fucks anyone if she thinks that will get her some free drugs.
by Jerkso April 02, 2006
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A person who is willing to partake in trading sexual favours for some mind altering substances.
Everyone knows he’s only getting laid because that girl he is seeing is a major packet-slut feening for her next hit of meth!
by Coastalkiwi June 20, 2018
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