Many areas of endeavour, such as the law and medicine, tend to have their own specialised vocabulary and/or special ways of pronouncing some words. One area which is well-known for its idiosyncratic pronunciations is sailing. Here is some nautical terminology. These words may not be very useful to you in everyday life, but they are fun anyway.
boatswain (bosun) ˈbəʊsn
gybe (jibe) dʒaɪb
north (nor’) east/west nɔːˈr iːst/ˈwest
Thanks to Alex Rotatori and Petr Rösel for additions