Supervixens

Gas station attendant Clint Ramsey, who works at Martin Bormann's Super Service in the desert, finds himself too irresistible to a series of women, all of whom have the word "Super" in their given names. In the beginning, he is married to the hypersexual, demanding, and jealous SuperAngel (Shari Eubank), who constantly harasses him at work. She orders him home at once when she calls Clint and overhears a female customer, SuperLorna (Christy Hartburg), hits on him at work. Clint finds SuperAngel's constant accusations and arguing a turnoff and, back at home, they fight after he rejects her aggressive advances. A neighbor calls the police as Clint leaves for a local bar, where the bartender is the very scantily clad SuperHaji (Haji).Meanwhile, SuperAngel seduces Harry Sledge (Charles Napier), the cop who responded to the police call. He is impotent and unable to perform. She repeatedly taunts and insults him over this, which finally results in him killing her by stomping her brutally in a bathtub, then throwing a radio in the water which was plugged into the wall socket. Sledge burns down the house, then tries to pin the murder on Clint. Clint claims being in the pub all night, but SuperHaji has her revenge on him (from insulting her breast size earlier) by refusing to confirm his alibi. Clint is then forced to flee.In his rush to escape, Clint hitchhikes a ride from a man (John LaZar) and his girlfriend SuperCherry (Colleen Brennan). During the drive, SuperCherry comes on to him and puts his hand over her breast, but then pulls it back. She then tries to give him a handjob over his pants, but he continues to resist her advances. The driver takes offense to Clint rejecting his girlfriend, but she says he probably just wants a closer contact. She again attempts and fails to seduce him and he asks the driver to let him get out. The driver follows him out and beats and robs him. Clint is found by an old farmer who takes him to his farm to heal from his injuries and Clint agrees to work for the farmer for a week to repay him.The farmer has a younger Austrian mail-order bride, SuperSoul (Uschi Digard), who is hypersexual. After energetically satisfying her husband, she comes knocking on Clint's door at night. She immediately pushes him into his bed where she proceeds to mount and rape him, until he manages to overpower her. However, she does the same the following day and this time overpowering him after jumping him from behind in the barn. Looking for SuperSoul, the farmer finds them in the barn, then chases Clint away and punches SuperSoul.Fleeing from the farm, Clint meets a motel owner and his deaf daughter, SuperEula (Deborah McGuire), who convinces him to take a ride with her in her dune buggy to have sex in the desert. They are caught by her father and chased out of town.Clint eventually meets up with SuperVixen (also played by Shari Eubank) at Supervixen's Oasis, a roadside diner. SuperVixen is (inexplicably) a friendly and giving reincarnation of SuperAngel, whose ghost now appears nude between scenes to comment on the plot from atop a bedspring balanced on a mesa. Clint and SuperVixen fall in love and are inseparable, although their common nemesis, Harry Sledge, arrives on the scene and plots ending the lives of the now happy couple.

Question: Where does Harry stomp SuperAngel to death?
Answer: Bathtub