What is Bollock-catcher?
1.
Some kind of situation or thing that is going to cause immense grief no matter what is done to avoid/mitigate the "
You have been out on the razz in town. You are running for the last train home. As you come down the stairs, you drop your keys.
If you go back to pick them up you will miss the last train and will be walking 15 miles home because you have spent all your cash and are too drunk to remember your ATM card number.
If you carry on for the train you will have to break a window to get in, slice your mitt open, and likely be reported to the fuzz by the neighbours (again).
"Christ-on-a-bike that was a bit of a bollock-catcher." you say.
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