I don't know. I thought they were cute but I felt uncomfortable . It seemed to me that Barbara Bush got a funny look on her face just for a second too.
They're not running for office. In a serious convention, it seemed appropriate to lighten up things for a few minutes. They really made their Dad & Mom look good. They were raised well. I don't think they're going to follow their parents' footsteps but they were loving and supportive. Whether they got the MTV vote for their Father, well that remains to be seen.
I thought *they* looked comfortable enough, given the situation... and the considerable pressure.
Perhaps it's a matter of expectations. I wasn't expecting them to come up with any earthshattering oratory. I expected a couple of giggling 22 year old kids.