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1.
A prostitute who is addicted to drugs.
"I can't believe you are both a prostitute and addicted to drugs! According to my handy urban dictionary, this makes you a junkslut!"
by Panera Bread February 24, 2006
53 24
 
2.
A sucker for all the latest electronic gadgets, toys, etc...

Made popular from gaming comic stip Penny Arcade
She just HAD to shell out $500 for the new Samsung Dolce & Gabanna phone since she's such a junkslut!
by AngeG October 23, 2006
20 11