(often imperative) To watch one's mouth, especially regarding swear words.

(archaic, idiomatic) To go by the best possible route.

Alternative spelling of too big for one's britches

(vulgar, idiomatic) Exceptionally favorable personal luck.

(chiefly US) The notion that one drop of white blood (i.e. any white ancestry at all) makes a person white.

Angry words, harsh criticism.

To attend to one's duties. / To depart.

To be able to laugh at another person through having got the better of them.

simple past tense and past participle of roll over in one's grave

present participle of roll over in one's grave