Top Definition
Originates from Japan. It means 'a fat fish.'
gulp gulp gulp im a phat fish
by AXE April 16, 2005
Incredible kid. Slept only two hours a week, and lived to tell about it, and remained relatively sane.

verb - to pull a yuji - to stay awake for three nights in a row
1. Yuji is cool.

2. I pulled a yuji to study for my finals and i failed all five of them.
by joey_L_mindfuck March 13, 2005

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