Article continues below advertisementDonald Trump continues to prove how his vocabulary is one of a kind. In May, the president addressed the public during a White House press conference, where he claimed Americans would begin to pay significantly lower prices for prescription drugs - prices that would match the minimum amount European countries pay for medications.During his speech, the 79-year-old used the word "equalize." As he continued to make his statement, Trump ranted that he invented the word - despite it being around for over 400 years.