Top Definition
greasy, perverted, ugly, stinky, asian who is terrible at volley-ball. Tries to get girls....fails miserably.
"dude....I can't beleive she rejected me!"
"aw man, guess you pulled a Yi Sun."

"dude....I can't find my penis."
"shut the fuck up, Yi."
by thisreallyhotgirl April 24, 2010
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