Search in full dictionary

KNOCKING (ONE'S) BRAINS OUT

KNOCKING (ONE'S) BRAINS OUT
ScnTUEU
(colloquial) spending a lot of time in thinking or worrying over a subject. But if you didn't know the principle you would just keep knocking your brains out trying to train this person how to confront another human being. -Gradients and Nomenclature (6 Aug. 64)