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2.
The sound that you make when you really, really can't whistle.
When your boys are hustlin' the block, and you see those unmarked cars circling, you better do something to let em know. "Skee-wee!"
by Gert Appleton November 23, 2006
 
1.
warning that the police are coming. used if you can not whistle
"warn a brother, if you can't whistle holler skee wee"
by mslyssa February 15, 2008