1) An amount of money that is less than a dollar, consisting of coins.
2) An undesirable amount of change that you can't really buy anything with.
"Yeah, I was standing at the counter and she handed me back some Dooky change. What am I supposed to do with that?"
Person 1- "Let's go to the strip club!"
Person 2- "No way man those girls aren't worth Dooky change."