Apparently, a general did. While Joe & Jill walked across one of the White House lawns, she was wearing what appeared to be some kind of form fitting leather or leatherette pants. A general off to their left was looking in the direction of the pants with a big smile, maybe even a laugh.
It was one of those few times I wish the video was accompanied with the audio. So, now all we have is the implication of a laugh. I can’t imagine anyone providing a true witness account.