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1.
term to describe irregular quantities of vaginal discharge.
you ain't stackin flow w/ heavy flow
by Chafin June 27, 2006
 
2.
A term used to demonstrate that you acknowledge someones achievements and praise them for their efforts.
"Man did you see that goal i just scored?"

"Yeah man, that had some pretty heavy flow!"

"Man I was going off on Friday night!"
"Yeah dude your flow was pretty heavy that night you were loose!"
by George Reaper October 09, 2011