Man spends three hours pronouncing one word

A man has spent three hours pronouncing what some claim is the longest word in the English language.

The word – the chemical name of "titin", which is also known as "connectin" - has 189,819 letters and begins with "Methionylthreonylthreonylglutaminylarginyl", but it doesn't appear in the Oxford English Dictionary and it has previously been disputed whether it is an official word or not.