Article continues below advertisementDuring a White House event for Military Mother's Day on Wednesday, May 6, President Donald Trump went on a viral tangent explaining the difference between the homophones "sea" and "see," sparking some to call him the dumbest president in history -by far.While discussing a decrease in drug trafficking, the president said, "By sea - by sea, by ocean, by the water, you know."He then interrupted his speech to clarify for the audience: "A lot of people say, 'What do you mean by sea?' I said, see, like vision? No. It's sea. S-E-A," he proudly said.