You may have to be British to like it.... ...as one reviewer said above "Only the British can make rubbish like this" - but what lovely rubbish. The film followed on from a very successful BBC TV series of the same name - still showing today.
It's full of "innuendo" (which American viewers may not follow) and cheeky - but like "Carry On" films that is where the charm lies. We like smutty films - where suggestion is best left to the imagination. The death knell of the later "Carry On" films was heard when they actually showed naked women on screen - it has all been good clean titillation up to then, missus! Frankie Howerd, as a veteran of stage, radio, film and TV, allowed these romps to be used as a vehicle - full of his catch-phrases, knowing nods to the audience and hidden meanings.
Guess if you don't like it - you may not be British!