Mamie Van Doren originally refused to film the nude bathtub scene because she felt it was gratuitous. A month after wrapping the movie, Tommy Noonan called her and begged her to do it, saying it was critical to selling the movie. He told her Playboy wanted to do a layout with her promoting the movie and put her on the cover. Since she owned a percentage of the film and was certain to financially profit from the publicity, Van Doren agreed to shoot the scene and pose for nude photos. A six-page layout was printed in the June 1964 issue of Playboy.
Although it's still unclear exactly what it means, Mamie Van Doren's baffling sign-off line ("It sure don't taste like tomato juice!") is a take-off on a popular TV commercial (for V-8 tomato juice) of the era. (Clarification: V-8 Juice is red and has the same consistency as tomato juice, so the line from the commercial is [It looks like tomato juice, but] "It sure doesn't taste like tomato juice.")
New York City banned the film because of the nudity and subject matter. But that publicity helped sell more tickets because men in NYC just went across the river to Jersey City to see it there.
They had to use shaving cream for Mamie Van Doren's "beer bath" in order to make it look as if it was full of suds. After Van Doren took off her robe and stepped fully nude into the water, the male production crew squirted several cans into the tub around her and onto her body. She said they used menthol cream which started to irritate her skin after awhile. When they were done filming, several of the guys volunteered to rinse the suds off her naked body.