When Bart gets sent for the summer to stay with his step auntie Kendra, he finds himself in a world of hurt after making the huge mistake of calling her a bitch. Kendra takes Bart to her infamous "punishment room", and proceeds to blister his backside with a relentless no warmup bath brush paddling. When Kendra notices her naughty step nephew getting a boner, she decides to spank his boner away with the menacing bath brush. Bart has the gall to blame Kendra's provocative dress for exciting him, but Kendra threatens to scrub his mouth out with the brush if he persists with his insolence.

Kendra continues wailing on his ass, making it damn near the color of her red dress. Not satisfied of his contrition, Kendra tells Bart that she has a paddle she prepared for his arrival and proceeds to paddle the daylights out of his already welted ass. Kendra turns Bart around and shoves the bath brush in his mouth, threatening to was his mouth out, and then proceeds to punish his cock with some swats of the bath brush.