adj. , slang 1. In tune with the latest fads, ideas, and fashions. I dig Sarah, she is really switched on. 2. Stimulated; as if under the influence of alcohol or drugs. How come you're talking so fast? Are you switched on or something?
SWITCHED ON
Meaning of SWITCHED ON in English
American idioms English vocabulary. Английский словарь американских идиом. 2012