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1. pumping iron
1) Lifting freeweights, origianally all made of cast iron. Some are now plastic.

2) Arnold movie about the first definition.
"Can't go out tonight, I'll be pumping iron at home."


"Have you ever seen pumping iron?"
by Gumba Gumba Apr 14, 2004 add a video
2. pumping iron
To have brutal sex with the opposite gender.
"I can't picture you pumping iron with a man."
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