1) the sound of a cash register
2) the sound that plays in your mind when you get your check
1) Cha ching, two dollars and thirty-three cents is your change.
2) Oh yea, I just got paid cha ching, now I'm getting laid.
by snorgle October 19, 2003
An enthusiastic expression when you get money you did not do much to earn, OR found money
He wanted another one of those cha-ching!

I looked in the couch and found two bucks cha ching!
by Dick Weed March 8, 2005
cha ching is when a man's cum hits the woman in the eye right out of the gate
i cha chinged her!jack, please cha ching me when you can!
by dirtyone8 November 13, 2007
The sound that a cash register makes when its drawer is closed after money has been put inside. Used in conversation to indicate that the person being spoken about is going to or already has made quite a profit at little expense.
Steve: Yeah, so I was able to sell the FIFA for $50! Cha-ching!

Fentruck: Good deal. How much do you think I could get for one?
by Diggity Monkeez April 25, 2005
Means "money" is to, or can be, made in an instant.
References the sound older type cash registers made when tabulating a final bill.
Like when someone slips and falls on a banana peel in Trump Tower due to the negligence of the Trump Tower clean up crew to remove that discarded banana peel from its entrance way. That first thought in one's mind would be LAWSUIT!! ...and the first words out of their mouth would be "CHA' CHING"
by CLowther December 15, 2004
an expression used to show excitement after something good has happened.
The homework I didn't do last night wasn't collected. Cha-ching!
by Meghan February 11, 2005