Shoo means, "go away, I hate you, you don't belong here, why are you still here, you're not supposed to be here, go away!". so instead of saying all that, you just say shoo!
by j00l.i.e April 26, 2003
when you want da bitch to go away
a: shoo
b: shoe?
a: just go away.
by purdygurl March 11, 2017
A replacement for the word "shit" in times when saying "shit" will result in trouble. Or just a replacement for shit.
Person A: "Today I found out I was adopted."
Person B: "Ohh shoo, sucked in mannnn"
by Shervin B February 27, 2006
Exclamation to express extreme pleasure or angst
"Shoo, I is doin' tha finest girl in da city" or "I hear he needs a hole in da head, shoo!"
by Theron3 March 16, 2003
to kill time talkin about nothing, or to spit game to a girl but to the point where theyre tryna do it descretely
"ya boys quit shoo shooin n lets go get this money"

"man, that nigga shoo shooin on the phone wit that hoe"
by SOP ConFident August 25, 2009
Father Mackin asked me how I liked the light show, and I was all, "Stop talkin' shoo shoo!"
by Quinn the Eskimo February 4, 2003
The correct spelling is shoo-in, usually with a hyphen. It has been known in that spelling and with the meaning of a certain winner from the 1930s. It came from horse racing, where a shoo-in was the winner of a rigged race.

In turn that seems to have come from the verb shoo, meaning to drive a person or an animal in a given direction by making noises or gestures

These day's the term is associated with short odd's favourites in any sport
Australia are shoo-in's for the cricket world cup
by TheDaddy April 25, 2007