To make ones wealth known, to be deliberately ostentatious, to be frivilous with money. See also greens
"I went up to the counter and flashed my greens and they gave me the best seat in the house", or "Tonight I'm going to pick up my date, take her to the club and flash my greens."
Money, particularly referencing American currency (the greenback). Similar to 'bills'. See also flash my greens
Someone dressing well to impress others may refer to their behaviour as "flashing their greens". And they may describe their wallet or bank account as being "fresh out of greens" after purchasing the impressive clothing.