I'm not allowed to shake hands with humans.
He erased the royal lilies from the panels of his carriages; and the Palais Royal, like the White House at Washington, stood open to all and sundry who cared to come and shake hands with the head of the state.
On entering a full room of people, Britons don't shake hands or greet everyone in the room.
Tell them they are to shake hands with at least six people.
Gestures. Asimo will shake hands when it sees a hand is being proffered for that gestures.