Ox-in-the-ditch compound adjective Biblical
It can also be phrased as “the ox is in the ditch”
If you describe a situation as an ox-in-the-ditch, it is very dreadful and needs immediate action to be resolved.
Sorry for leaving without saying anything, but my wife's accident is an ox-in-the-ditch situation.
He rarely works on Sundays, only if the ox is in the ditch.
The expression is taken from the Bible (Luke 14), in which Jesus demonstrates to the Pharisees that some emergencies must be dealt with immediately, even if it means breaking the Sabbath to do so.
A group of bad or sinful people
You'd better stay away from them. They are a nest of vipers.