(vulgar) Idly, doing nothing important in a situation that requires it.

(colloquial, Southern US) Alternative form of ridden hard and put away wet (“in either sense”)

A derisive insult.

plural of nothing-up-my-sleeve number

(cryptography) A number which, by its construction, is above suspicion of having hidden properties; used in creating cryptographic functions such as hashes and ciphers.

Alternative form of don't give up your day job

Alternative form of done up like a dog's dinner

(simile, informal) Dressed in an ostentatious or overly formal manner.

(informal, simile) Richly or gaudily clothed or ornamented.

(informal, simile) Very brightly lit.