He does like to bow.
Check it out:

The voice was slightly halting, childlike. “Welcome to Miraikan, Mr. President, it is a pleasure to meet you.”
President Barack Obama bowed, looking delighted.

His greeter, after all, was a 55-inch-tall, give or take, humanoid robot with the look of a diminutive Star Wars storm trooper.
“It’s nice to meet you, too,” Obama said, pausing to watch the robot, named ASIMO, perform during a tour of the National Museum of Emerging Science and Innovation.

Despite Obama’s background in constitutional law, there’s a presidential geek side that always seems charmed, if not bemused, by technological advances.

Asimo, made by Honda, announced “I can really run fast” before loping toward a soccer ball and informing Obama, “I can kick a soccer ball, too.”

The robot delivered a well-aimed ball at Obama who trapped it neatly with his foot. For its final demonstration, the robot declared, “Recently I have learned how to jump.” It then proceeded to hop, first on one foot, then on two.

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