(Something that stands and then falls over. Pretty much the same as "umfallen", but "umkippen" is more common for drinks.)
2.
to topple over, to knock over
(Knocking over a standing object. Primarily used for knocking over someone's drink. Doesn't always sound idiomatic for other objects, especially big ones.)
3.
to go sour
(For milk and juices that go bad.)
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