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3.
A hot girl. Comes from seeing a hot chick and saying "yeah hi!" to announce her presence.
Dave saw a yeah hi on campus this afternoon.
by uber October 31, 2004
 
1.
A phrase commonly used in the movie Office Space by a character known as Bill Lumbergh. He almost always uses the phrase to address someone, especially the main character Peter Gibbins.
"Yeah hi, it's Bill. Your tps reports didn't have the new cover sheet on them. Did you get that memo?"
by DareMe October 12, 2007
 
2.
A greeting said upon meeting someone or when picking up a telephone. Usually used by those who are jewish and/or suffer from A.D.D.
Yeah Hi. It's all about me.
by Finger Kisses August 17, 2007