Description
While driving his Dual-Ghia from Las Vegas to Los Angeles, lecherous, heavy-drinking pop singer Dino (Dean Martin) is forced to detour through Climax, Nevada. There he meets the amateur songwriting team of Barney Millsap (Cliff Osmond), a gas station attendant, and piano teacher Orville J. Spooner (Ray Walston), a man easily given to jealousy. Hoping to interest Dino in their songs, Barney disables the "Italian" sports car and tells Dino he will need to remain in town until new parts arrive from Milan. (Dual-Ghia was actually an American marque, mating a Dodge frame, drivetrain, and engine with Italian coachwork.)
Orville invites Dino to stay with him and wife Zelda (Felicia Farr), but becomes concerned when he learns the singer needs to have sex every night to avoid awakening with a headache. Anxious to accommodate Dino but safeguard his marriage, Orville provokes an argument with his wife that leads to Zelda fleeing in tears. He and Barney then arrange for Polly the Pistol (Kim Novak), a waitress and prostitute at a saloon on the edge of town called the Belly Button, to pose as Orville's wife and satisfy Dino.
That evening after the three have dinner, Orville plays his tunes for Dino on the piano and Polly requests a particular song. It is one she knows he wrote for his wife when trying to persuade her to marry him. Doing so, Orville gets lost in emotion, as does Polly, who has fallen a little for the dream of a domestic life that she doesn't have. Under the influence of wine and song, Orville starts thinking of Polly as his wife and tosses Dino out. He then spends the night with Polly.
Dino seeks shelter at the Belly Button, where Zelda earlier had gone to drown her sorrows. When she became drunk and rowdy, the manager deposited her in Polly's trailer to sleep. Hearing about the talents of Polly the Pistol and declaring himself eager "to shoot it out with her," Dino goes to the trailer and finds Zelda there and mistakes her for Polly. A longtime fan, she succumbs to Dino's charms and allows him to seduce her, persuading him how perfect Orville's song would be for him at the same time.
Zelda meets Polly the next morning and figures out the trick Orville played on her. She gives Dino's money to Polly, who needs it to leave Climax and start a new life.
A few nights later, Orville is distraught knowing that Zelda intends to divorce him. Suddenly he hears Dino singing one of his songs on coast-to-coast television. He is at a total loss as to how this could have happened. He wants an explanation, but Zelda simply orders him: "Kiss me, stupid."