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.
one who goes after ugly women at night while intoxacated and wakes up feeling like he spent the night hunting for monsters
"what h..