Big Mildred Share definition Flag The female equivalent of big bubba; the guy in prison who fucks you in the ass. Angry Grandpa: YOU’RE GOING TO JAIL MISSY! YOU’LL BE DOING THE GODDAMN HORIZONTAL POLKA WITH BIG MILDRED!! Big Mildred by ThatBadassOnline June 1, 2020 0 0 Get merch Get the Big Mildred mug. Buy Now — $32.95 See more merch