You're right, it is funny but it also shows something pretty unique.
Isn't it interesting to see that throughout her upbringing with all it's inherent stress, Victoria hasn't had the joyous spontaneity of her nature squashed by being intensely trained to behave in a dignified and "proper" way as befits her destiny.
No, not Victoria. As a mature adult, she's not only come out smiling but exhibits a pretty uninhibited sense of fun and seems to almost wallow in the sheer joy of being alive. Which is pretty interesting when you go back to the posts in early 2003 and see the general tenor of what we were seeing and talking about how much she looked like her father (and not in a good way)!
And she's not afraid to let everyone see what she is feeling. Hence the terrific shots we see on this thread although if you really want to see how funny and how much fun she can be, the video's are the ones to watch. She effervesces!