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1.
1. A sound word (onomatopoeia). Typically made by someone when they are irrationally excited and cannot think of any other sound to make. Typically expectorated spontaneously and without warning.

2. Another way to say "look".
1. "We won!"
"wh00k!"
"Dude, that's not how you say/type it."

2. "Dude, whook over there"
by M. Geib April 26, 2008