Adrien Broner's $40k Spending Spree ... On Dat Ass (Video)

Here's boxing champ Adrien Broner taking a break from spending money on cars and jewelry to donate it to a group that really needs it ... strippers.

Adrien -- who just won the WBA light welterweight title on October 3rd -- is obviously still in celebration mode 'cause he and his manager invaded Stadium strip club in D.C. and spent over $40k!!!

If the name Stadium rings a bell it's probably because it's the same place where Drake famously spilled a bunch of cash while darting into an altercation involving one of his boys last year.

We're told Broner dropped his cash squarely on the ladies ... so much so that at one point he ran out of dollar bills and began to make it rain HUNDRED DOLLAR BILLS.