Talk Dirty to Me 4(1986)

Talk Dirty to Me 4 is an adult comedy that follows the return of the mermaid protagonist from the previous installment. She arrives in the city with her sisters, eager to experience urban pleasures, but the polluted water forces them to retreat. When the original mermaid vanishes in pursuit of her own desires, her siblings turn to Jack, the man who first introduced her to human ways. Jack takes on the task of tracking her down, drawing on his intimate knowledge of what mermaids want. The film blends fantasy elements with explicit humor as Jack navigates the absurd complications of his underwater romance.