Dear Mister (or Miss) Caterpilar, who seemingly lived in our tiny tree..
I am very sorry for flushing you, but 1) this is Norway, in December - e.g. not a very happy place to be for a caterpilar - and 2) we're going away for most of Christmas, so there wouldn't be any one to look after you (or much for you to eat, unless you know how to open the fridge and make yourself a sandwich or something..).
Once again, I am very sorry for flushing you down the toilet - I hope where you end up will be some place better. Hey, look on the bright side, atleast you weren't eaten!
The Caterpilar Flusher.