No Obama doesn’t like to be embarrased even if he does the wrong thing.
I am curious to understand why you would say no one has noticed?
It isn't going to get much if any coverage in US media. Even if the video is shown on US TV, most Americans are not going to get it even with an explanation. The other gaffes this man-child has made have been quietly swept under the rug.
This animated GIF created by Potlatch from pictures that AmericanInTokyo assembled is more striking.
Edit: Hmmm. That link doesn't work quite right. Go to post #430.