What is Fat Arm?
1.
To cruise down the street in your car with the window rolled down with you arm hanging out the window making your muscles look bigger than they actually are.
Let's go fat arm it down mendo.
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2.
A lesbian rower who is known to sleep with someones boy friend...also can be called ant farm or dykleznowkbi or horse face bird nose
Rachel is a fat arm.
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Random Words:
1.
(n.) An editor on slangdefine that sees a definition for a new word and sometimes rejects it, then submits their own (often derogatory) ..