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2.
To shake vigorously; also the noise of a car accelerating
Lets woonce this Mofo sumthin fierce
by hebosaurus August 26, 2008
 
1.
Woonce is defined as the vigorous shaking of an individual(s) while muttering the word 'woonce' in an ape-like, guttural manner. The words origins are shady but it is thought to have originated at the school of St Mary's College which just epitomizes the schools excellence in education and behavourial control
"Look at that Italian, he can't have fun, lets woonce him"

"Woonce, woonce, woonce, woonce"

"We woonced him good shake of fist"
by dcstallion6 August 26, 2008