Abbrev. "Brain switched on".

Someone who is switched on is alert and intelligent.

Referring to the heavy unfashionable winter jacket and patterned mittens Sanders wore to the inauguration of Joe Biden.

To be in the zone and focused on a task or during an event. People put in stressful situation who are rolling with the punches and not getting hung up on things are switched on. First responders, military personel and those who deal with dangerous and stressful situations are known to become "switched on" when faced with an event.

1. Beyond turned on.

2. To personally know many important people in high positions that can be called upon for favors.

3. An intelligent person who is also on the ball.

Switched on can mean to be in love. It is used to describe the feeling someone feels when they are infatuated or turned on, it is another form of turned on. I guess it is not really in love but it can be used in a different sense than turned on.