Some Mothers Do 'Ave 'Em recurring catchphrases include references to "a bit of trouble", which usually implies some sort of undisclosed digestive disorder, and to the cat having "done a whoopsie" (presumably a euphemism for having defecated in an inappropriate place, on one occasion in Spencer's beret). If Frank is pleased (or confused) about something, he will often use the catchphrase "Mmmm — nice!" or "Ohhh — nice!" Despite his unfailing ability to infuriate people, Frank is essentially a very sympathetic character, who inspires much affection from his ever-loving and patient wife, Betty. He also venerates the memory of his late mother, Jessica, and worships
Some Mothers Do 'Ave 'Em "I am he." He also becomes more self-assured, and much more willing to argue back when criticised, and often wins arguments by leaving his opponents dumbfounded by the bizarreness of what he would say. Acknowledging the show's success in Australia, the final series saw him begin talk of having relations there, and contemplating emigrating. Crawford himself has talked of how he based many of Frank's reactions on those of a young child. Crawford also found it difficult to break out of the public association with the role, despite his later career as a hugely successful musical performer on the West