Brit Humor....
Having never heard or seen these 'Carry On', comedies I found the Brit humor mostly humorous and kept wondering how much humor evolves over time and inspires others- i.e. Monty Python for example. In my youth I didn't get much of the Monty Python type humor and now find much of it hilarious.
Most of the humor is enhanced by the physical traits of the cast as many just have those funny facial characteristics.