know what's o'clock
know what's o'clock
To be attentive and aware of all that is going on. Those students thought they could get away with cheating in my class, huh? Too bad I know what's o'clock!
See also: know
Farlex Dictionary of Idioms.
- pay attention
- pay attention (to someone or something)
- if you want a friend, be a friend
- (that's) OK with me
- (that's) OK by me
- sit still (for something)
- sit still for
- get on for (something)
- do someone in
- done in