 Another feature of his humour was to feign innocence about his obvious and risqué double entendres, while mockingly censuring the audience for finding them funny.Howerd appeared as Francis Bigger, one of the lead characters in 1967's "Carry On Doctor", of which "Variety" noted, "Added zest is given by the inclusion of Frankie Howerd as a quack 'mind-over-matter' doctor who becomes a reluctant patient.Howerd's brilliantly droll sense of comedy is given plenty of scope."