Things that go bang

Yesterday we were quietly resting when we heard a funny noise - a loud bang, like something falling over.

We couldn't find the source, but later Martin noticed some water on the floor near the hot water cupboard.  When he opened the hot water cupboard he found this:

Over the winter, I've been putting my kefir bottles in the hot water cupboard overnight to get good and fizzy.  This bottle had only been there maybe 4-5 hours and had got fizzy enough to break open at the bottom, shoot up in the hot water cupboard and knock down one of the slats that form the shelves!

I guess the weather's warm enough for them to get fizzy on the bench again now :-)