Well, that was a first, having a 1-year-old smash a cake, well attempt to, that icing can be a bit hard to break through.
I suppose in these types of shoots, giving directions can be pointless it's more a case of be ready for the shot, if it happens. You do happen upon those looks of, "Can I really do this, am I allowed"
Of course there are times when it's just a matter of time before they run their cake laden fingers through their hair (that's the part where the parents get to enjoy cleaning up.
All in all, it was learning experience and the best part it was fun too, something we tend to forget what photography can all be about.