(idiomatic) At the scene; in the right place at the exact moment.

Familiar with someone, such that one can address them by their first name. / (by extension, humorous) In regular contact with a person or organisation.

(idiomatic) dangerously, hazardously, delicately

(usually childish) To inform on, to rat out; to tell a person in authority that someone else has done something wrong. / To cause visible strain to.

(chiefly US, idiomatic) On unfriendly terms; estranged.

(informal) To start early, especially before something begins or before others begin; to get a head start.

(UK, colloquial) To annoy or upset someone, especially by repeated disagreeable actions.

(military, slang) How are you?

Alternative form of on your mark, get set, go

(idiomatic, Britain, Ireland) To do what is described or what one would expect, with no further explanation needed.