Events that have already taken place cannot be changed and actions that have already been committed cannot be undone, so it is best not to dwell on them.

Agreed to and accomplished or finished.

(idiomatic) Performed well. / (cooking) Well-cooked. / (specifically, of meat) Cooked through to the center.

An exclamation of praise or endorsement of an achievement.

(idiomatic, ironic) An assertion that the speaker has personal experience or knowledge of a particular place or topic.

(UK, idiomatic) used, cheated, or exploited by

(of meat etc) Cooked until no blood runs and there is no pink flesh on the inside.

simple past tense and past participle of do a bunk

(idiomatic) An agreement that has been finally resolved or decided.

past participle of do up