ABC Wednesday,O of OK

New Tricks is a British comedy-drama that follows the work of the fictional Unsolved Crime and Open Case Squad (UCOS) of the Metropolitan Police Service. Led by Detective Superintendent Sandra Pullman, it is made up of retired police officers who have been recruited to reinvestigate unsolved crimes. The series title is taken from the proverb "You can't teach an old dog new tricks"
These retired policemen and woman might be old, but they still do their job well and sometimes even better than the original police officer who did the investigation when the crime had happened.
Wikipedia:
"OK" (also spelled "okay", "ok", or "O.K.") is a word denoting approval, acceptance, agreement, assent, or acknowledgment. "OK", as an adjective, can also express acknowledgment without approval. "OK" has frequently turned up as a loanword in many other languages. As an adjective, "OK" means "adequate", "acceptable" ("this is OK to send out"), "mediocre" often in contrast to "good" ("the food was OK"); it also functions as an adverb in this sense. As an interjection, it can denote compliance ("OK, I will do that"), or agreement ("OK, that is fine"). As a verb and noun it means "assent" ("the boss OKed the purchase" and "the boss gave his OK to the purchase"). As a versatile discourse marker (or back-channeling item), it can also be used with appropriate voice tone to show doubt or to seek confirmation ("OK?" or "Is that OK?").

It's alright, it’s OK Doesn’t really matter if you're old and grey It's alright I say, it’s OK Listen to what I say! It's alright, doing fine, Doesn’t really matter if the sun don’t shine, It's alright I say, it's OK We’re getting to the end of the day! Hi tech, low tech, take your pick ‘Cause you can’t teach an old dog a brand new trick I don’t care what anybody says, At the end of the day There’s a place that I can find A drink or two to ease my mind Golden days It’s alright, take your time, Ev’rybody thinks that you’re past your prime. It’s alright, it’s OK. Still got plenty to say
With thanks to Denise Nesbitt,  who created ABC, and Roger, who took over from her. For more interesting ABC posts click on the logo in the sidebar. This week we are looking for words beginning with O