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2.
Mexican in origin, it's a emphatic phrase that sounds cool when you say it. Suitable for use in the courtroom.
Ha Cha Cha,I concur your honor.
by JStrud September 14, 2008
 
1.
What you say when you see someone/something that you think is hot, very sexy looking, spicy and titillating.

Is that a picture of your boyfriend? Ha-cha-cha!

by WWLL January 24, 2008
 
3.
Retarded way of laughing, said while sighing.
Person 1: "Hachachacha"
Person 2: "What?"
Person 1: "Hachahcha"
Person 2: o.O
by OliOliOliOooo January 14, 2009
 
4.
sex; moan during sex; thinking or remembering sex
ooh ahh eeh! Ha cha cha!
by Marcas McGoney May 12, 2006