Predominantly used in London.
To 'clock' is: to realise, to catch on, to notice.

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.

Beaten, bashed, punished. To hit someone.

Observed, recorded, noted. Possibly related to determining the speed of a car by using a stopwatch to time its travel between two fixed points, such as "He was clocked doing 60 in a 45 zone".

To get caught out, usually by feds (police)

To completly smash a video game. Meaning you get perfect scores and without losing a single life.

Coming from the definition of being punched in the face and knocked out, clocked is a new stoner metaphor for when one is cooked and tired.