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1 definition by Brian Bai

 
1.
It is an actual person who was known to make awesome dinosaur noises and was a hardcore weight lifter. You may call someone a James Yoon. It means making dinosaur noises like AINFOIAWJFIAJWFOI and being elektrikk.
WHOA DUDE that kid just pulled a James Yoon.
by Brian Bai April 01, 2005