The phrase was stated in an interview with Whitney Houston when Diane Sawyer read a headline concerning the cost of Houston's drug habit. Houston, apparently assuming there were receipts from drug dealers and also apparently assuming Sawyer had them requested to see said receipts. The clip went viral in the form an animated .gif.
Something really useful from the US. The only reply to be made to an acquaintance, or a co-worker you don’t like very much who makes ridiculous demands on your time and effort for no recompense.
“What did you say when Malcolm asked you to do his work while he sloped off to get freebies at the supermarket?”
“I don’t wanna, I don’t haveta, I ain’t gonna.”