Totally Incorrect - But I Love It

The Police Oracle website has a listing of police slang. These are some of my favourites - the fact that they are funny doesn't necessarily mean that I approve of them!

100 Yard Hero: A member of the public who is very brave and shouts obscenities at a police officer from a safe distance.
Alabama Lie Detector: Police baton.
Bad Call: What your police partner says when they think you need an eyesight test. Usually uttered after you've pointed out a member of the opposite sex.
BINGO Seat: Bollocks I'm Not Getting Out Seat. The seat at the back of a police carrier where the laziest officer sits.
Black Rat: Originally Met traffic officer. Now in general use. Allegedly chosen as a motif because it's one of the only animals that'll actually eat it's own young!
Black Rover: Warrant card, when used as a travel card on bus, tube or train.
Body: Potential/Valued customer wearing handcuffs.
BONGO: Books On Never Goes Out. See also Uniform Carrier, FLUB and Clothes Hanger.
Canteen Cowboy: Police officer, generally young in service. One who likes to advise other officers, usually younger in service than the cowboy. Can be used as a put down, but usually behind the cowboy's back. eg: 'He's a real canteen cowboy that one'
Do you take warrant card?: Method of payment for goods or services by police officers. Practice believed to have been totally eradicated in the early 1900's. More flexible than your most flexible friend. eg. 'How would you like to pay for this curry?' 'Do you take warrant card?' 'That'll do nicely sir'. It has been said that back in the early 1900's some officers in the UK had totally done away with the need to carry any other form of accepted payment on their person.
FLUB: Fat Lazy Useless Bastard. See Uniform Carrier.
G.T.P.: Good To Police. Many things can be considered G.T.P. Shops that provide discounts, curry houses, night clubs that provide free entry etc.
Gurkha: Someone who has forgotten their powers of arrest. Taken from stories from the British army, e.g. Gurkhas don't take prisoners.
Guv: Officer of at least Inspector rank. Someone who doesn’t get paid any overtime.
Gypsy's Warning: When someone is given a 'quiet word' in their ear. Was in common usage until the 90's when it became politically incorrect.
Ker-Ching: as in noise made by a cash register. Usually said out loud shortly after giving a caution for littering (or any other sec.25 worthy offence.) ten minutes prior to clocking off time. Also see over-time bandit.
L.O.B. A call which did not require police presence. Load Of Bollocks, in less politically correct times was often heard on the police radio, was often given by old sweats as a result to a call.
L.A.S. People who make drunks disappear, take our carefully applied bandages off and know which nurses at the local hospital are currently single.
M.O.: modus operandi. The way in which a criminal commits a crime.
Night duty: Shift that starts at 10pm. Usually called nights. Causes zombie like states in some officers, growth of whiskers, night duty bottom etc.
NonDe: Non descript, used when referring to an unmarked police vehicle taken out on obbo's.
Old Sweat: Description of an officer long in service. possible term of endearment. Considered made it, see it, done it.
Olympic Torch: Never goes out. See BONGO.
Onion: Sergeant. Onion Bargie - Sargie. eg 'watch out the onion's coming!'
Over-Time Bandit: Officer who generally uses ker-ching frequently.
Padding: Unscrupulous police practice of adding to a drugs haul to upgrade an arrest and ensure a conviction.
Peckham Rolex: Tag worn by criminals on release from prison.
Probationer:The officer who just gave you a ticket for no seatbelt.
Section House: Large, usually decaying tower block housing young single police officers. Just like the TV program men behaving badly, but on a much, much larger scale. Also see sl*g.
Shiny Arse: Derogatory term for an officer employed in a long term office environment.
Showing Out: The unethical practice of hinting to an officer upon being stopped that you are a fellow officer and therefore not a sl*g. Done in the hope of receiving unfair treatment which we in no way condone e.g 'Have you got any ID on you sir?' - 'Why yes officer, I think I have my driving licence in my brief side pocket'. 'Do you realise you hit 97mph over the hump back bridge 10 miles back?' - 'Sorry officer, I'm court off nights this morning, I'm rushing home to get my number ones'. 'Have you ever taken a breath test before?' - 'Only when I was at training school, I blew under after having ten pints that day too'.
Spin Drum: To perform a search, generally to search a property. 'We're gonna spin his drum'. Spun Drum, property already searched. 'We spun his drum and found nuffink'.
Station Cat: Officer who preens themselves and finds every excuse possible not to leave the factory, work shy, a borderline shiny arse. Not to be confused with Station Cat: a nice, friendly, fluffy whiskered feline whom keeps itself busy by sorting the rodent population at the nick and living on tidbits thrown to it at refs time.
Strawberry Mivvie: Civvie. Civilian police staff. Can be shortened to Strawbs etc.
Thief Taker: Term of praise for a police officer. An uncanny radar-like ability to spot a criminal. eg. 'he's a good thief taker that one'.
Trumpton: Fire Brigade, very adept at cutting the roofs off of slightly dented cars. Rumoured to be prone to stealing, practice believed eradicated back in the early 1900's.
The full list is here.