In the knock-knock jokes, time and wit is crucial. In many countries of the world, such as UK, Ireland, France, Australia, U.S.A., Canada, and South Africa, such jokes are extremely popular. Interestingly, knock-knock jokes have their regional and lingual versions too. For instance, in French they begin as "Toc-Toc" and in Afrikaans as "Klop-klop". Knock-knock jokes have started making space in India as well, with their indigenous version being called "Khat-Khat" jokes. Read on to find a collection of funny knock knock jokes.