Got soaked too and the coffee soon grew cold but it was fun anyway. It is just like a Broadway show or movie: you have special effects, sound, a wind machine and some
guy pouring water down.
In this context: We got into the habit of yelling: "The intern...the intern..." when something like that occurs in a movie. We do that since somebody pointed out that whenever it rains or something is thrown in from the side of the screen there probably is a low-paid intern somewhere on the set who has to throw the bucket of water/the fake snowflakes/the feathers onto the set (and probably clean them up afterwards..)