Once, at a state dinner, Millard Fillmore spilled soup on his own tie but since it was just consomme, it didn't stain and hardly anyone noticed.
Warren G. Harding's presidency was struck by many scandals. The Teapot Dome scandal was the most significant. In it, the top of a White House teapot went missing for some time shortly before the Queen of England came for a state visit, but it was found in time.
George H. W. Bush almost caused a mild stir when he called a White House maid by the wrong name, but then quickly corrected himself.
It is rumored that Richard Nixon once petted another dog while his dog Checkers looked on.
While not implicating the president himself, James Garfield had to deal with the Star Route Scandal in 1881. This scandal dealt with corruption in the postal service. The public was angry about how much stamps cost, but then quickly got distracted when the president was shot.
Jimmy Carter confessed to a reporter that he once felt lust in his heart for a donut one of his cabinet members was eating.
Bill Clinton was known for playing the saxophone, when technically it was the tenor saxophone that he played.