https://www.businessinsider.com/donald-trump-ignored-royal-etiquette-when-shaking-prince-charles-hand-2019-6
Donald Trump ignored an important royal etiquette rule when shaking hands with Prince Charles
Mikhaila Friel | 24m June 4, 2019
“…The President already broke tradition by deciding not to bow his head when meeting Prince Charles, instead, opting for a handshake.
But the way in which he shook the prince's hand was questionable.
In a video posted by the BBC, you can see that Trump extended his hand to the British royal, and the handshake lasted for an estimated six pumps.
According to Prince Charles' former butler, Grant Harrold, Trump's method was the complete opposite of the way the royals are taught to shake hands.
"A royal handshake should consist of two-to-three pumps, with your palms open and thumbs down," Harrold previously told INSIDER.
Harrold, who now runs the Royal School of Etiquette, also mentioned that "you should never offer your hand to shake — wait for them to initiate the handshake," which Trump did not do…”
Note to etiquette snobs: President Donald J, Trump is a citizen of the United States of America and not beneath Royalty. Our President does not bow down to anyone…just sayin’.