I'm still trying, but I found this gem and I just had to share: https://en.m.wikipedia.org/wiki/Down_and_Dirty_Duck

The plot:

Willard Isenbaum, a lonely insurance man with wild sexual fantasies, decides to ask out the new secretary, Susie, whom he has only known for a day and to whom he has never spoken. He spends the entire morning before work fantasizing about having sex with her, but his attempts to approach her fail. His female boss sends him to investigate a claim filed by Painless Martha, an aging tattoo artist, who works in the city. Martha believes in a Ouija board message saying that she will be "killed by a bomb delivered by a wizard on Tuesday".

When Willard tells her that the insurance company will not pay until her death, she dies of a heart attack [after an explosion noise]. Her will stipulates that her killer must take care of her duck. After the duo spend a night in jail, the duck takes Willard to a brothel. After a wild night of partying, they wind up in the desert, where the duck dresses Willard in women's clothing in an attempt to get a ride. After several encounters with an old prospector dying of thirst, a racist police officer, a lesbian couple, and a short Mexican "bandito", they are finally picked up by a trucker.

Back at his apartment, Willard creates a makeshift sex object, which the duck eats. Shortly after, Willard discovers that the duck is female, and has sex with her. The following morning, Willard and the duck go to Willard's job, where Willard has sex with his female boss and quits his job shortly after. Willard and the duck leave, and the movie ends with Willard saying that the duck was a good duck after all.>