(informal, derogatory) not to overstrain oneself, not to over-exert oneself, not to overdo it, not to wear oneself out, not to kill oneself over (something), to take it easy

(informal) to be beside oneself with anger, to be furious

(informal) to behave in a haughty, insolent, impudent, cheeky, cocky manner; to have some gall, nerve, cheek, etc.

to be a certainty, to be clear

tell me about it

not to refuse

(informal) all right so far, OK, why not?, I can let it pass, that I can tolerate, ... is one thing (but...) (used to say that the first option is (barely) tolerable, but that the second is too much)

never say never

(informal, figuratively) not to be terribly refined, to be lowbrow, to be rather coarse (almost to the point of being crude, crass)

to be overly confident (in one's worth)