Some words are very complex, and at the complicated words some people find it very hard to pronounce them right. Especially if you are from other county where language is totally different.
One of such words also gave problems to the Russian paramedic when his co-worker captured a video of him during the pronunciation of a word that he has to use repeatedly in his job.
His friend asked him to pronounce the word “defibrillator” in front of the camera, and his exploit on the web resulted into a dose of a big laugh.
He could not say the word proper, and the co-worker spiced up the video with his contagious laughter.