look up any word, like cunt:
A plastic mine is where raw plastic is extracted out of the earth. Since plastic isn't mined, this is completely wrong and used to flame idiots.
"OMg i r teh l33t hax0r"
"Shut the fuck up and go back down the plastic mines where you shall eat nothing but cardboard salt."

"Send the *Insert group of people* back down the plastic mines."
by Harry charlslichcroyden March 07, 2005

Words related to plastic mines