This is the first of a four-part series of film poems called The Meaning of Lemon, based on the poetry of UK performance poet Trevor Meaney and directed by Bryan Dickinson of the Lancaster Film Makers’ Co-op. Each of the films in the series uses a similar device: a nonplussed or phlegmatic person listening to a unexpected poem delivered through improbable means. In “Hoover,” actor Philip Cowles’ eyebrow action really makes the film for me.