"BrattyMilf" is an animated character from the movie "Stepmom Says What the s---! Are you jerking off?!". It is the stepmom's version of the "BrattyBaby" show and is hilarious. The unfaithful mother-in-law has caught her son jerking off, and offers to fuck him while her daughter rests. Then she proceeds to lube up her asshole and fuck him..