Definitions by English Lecturer

sugar shock 

Rapidly rising blood sugar following sugar ingestion, followed by rebound insulin overreaction and resultant hypoglycemic symptoms eg dizziness aka 'sugar shock';
Reactive hypoglycaemia; Includes mental hyperinsulin hypoglycemia – 'sugar rush'

I drank coffee with five teaspoons of sugar and went into sugar shock.

sugar shock by English Lecturer March 11, 2010