"F" Slang

fin

Street

A fin is a five-dollar note in American slang.

fine and mellow

General

Of a person, attractive and pleasant in an easygoing way.

finer than frog hair

General

Used to say one is doing very well, or that something is extremely fine—frogs having no hair at all.

finesse

Street

To handle a situation with slick, impressive skill.

finessin'

Street

Smooth-talking, tricking or outmanoeuvring somebody to come out on top — could be money, a deal, a girl, a free meal. Less brute force, more sleight of hand. Drill and trap turned it into a whole lifestyle verb.

finishing move

Gaming

An animated execution you trigger by meleeing an unaware enemy from behind. Brutal, cinematic, and a total flex on the killcam.

finna

Aave

"Fixing to" — about to, or going to. Marks something you're on the verge of doing.

finna come through

Street

About to pull up — but with intent. In Houston the phrase carries the weight of the city's cruising tradition: you're not just stopping by, you're rolling through, probably on swangas, definitely with the music up.

finnif

Internet

Slang for a $5 note, elaborated form of 'fin.'

fins

General

The fin or fins fixed to the underside of a surfboard near the tail, providing directional stability, hold and drive through turns.

fintok

Internet

The finance corner of TikTok, known for bite-sized, hype-driven trading content and viral meme trades.

fintwit

Internet

The community of finance-focused accounts on Twitter/X, known for rapid takes and sometimes sharp analysis. A major channel for trade ideas and hype.

fire

Internet

A movement and strategy of aggressive saving and investing to achieve financial independence and retire far earlier than traditional retirement age, freeing oneself from the need to work.

fire in the hole

General

A warning called out immediately before detonating explosives or firing in a confined area, alerting everyone nearby to take cover.

fire wrench

General

An oxy-acetylene cutting torch — same tool as a smoke wrench or gas axe, different regional flavour. Used by mechanics and fabricators when seized fasteners, rusted brackets or stubborn welds need to be persuaded with flame. Hagerty popularised the term in the classic-car world.

firedooring

Internet

Firedooring describes a lopsided relationship in which access goes only one way, you're always available to them but can never get through when you reach out.

fireman's hose

General

The nose. Usually trotted out when someone's hooter is worth commenting on.

firing

General

Describes surf that is really good, with waves breaking perfectly and consistently. Synonymous with 'going off' and 'pumping'.

firm

Street

A criminal gang or an organised group of football hooligans, especially in London usage.

firme

Street

Good, tight, the real deal. Used to praise a person, a ride, a fit, a track — anything that hits right. The Eastside equivalent of 'solid' or 'clean'.

first blood

Gaming

The opening kill of a game. In MOBAs like League and Dota it pays extra gold on top of the normal bounty, so getting it snowballs an early lead. Announced with a booming voice line in most games.

first shirt

General

An informal term for a First Sergeant, also called 'Top' or 'First Soldier.'

fish

General

British Army shorthand for close-quarters urban warfare — clearing rooms, stairwells, and corridors. Often extended to FISH and CHIPS: Fighting In Someone's House and Causing Havoc In People's Streets.

fish or cut bait

General

Stop deliberating and either do the thing or make way for someone who will.

fish tape

General

A long coil of springy steel (or fiberglass) ribbon stored on a reel. You feed it through a conduit run or wall cavity until it pops out the other end, hook your wires to it, and pull them back through. Core electrician tool — if you've ever wired up an old house, you've cursed at one.

fishing

Street

Going hunting. 'Fishing' is when a group rolls into a rival postcode — on bikes, in a whip, on foot — trawling for any opp they can catch slipping. The metaphor is exact: cast a line, see what bites. A core piece of drill vocabulary because so many bars describe exactly this.

fishing line

Street

A line made of torn cloth, string, or elastic, weighted at the end, used to slide contraband, notes, or food between cells.

fishlining

General

The art of moving stuff between cells by tying it to a line — usually a strip of bedsheet or unraveled sock — and flicking, swinging or sliding it under doors or along the tier. The string is the 'fishing line', the package is the 'kite' or 'fish'. Bread-and-butter inside comms: notes, tobacco, food, drugs, whatever needs to travel without a guard noticing.

fishy

General

When a queen is 'fishy,' she's passing so convincingly as a cis woman that you'd never clock her. It's praise — 'serving fish' means the illusion is airtight, the femininity undeniable. The term itself is a blunt anatomical reference, but in the scene it lands as a compliment.

fit

Street

Occasionally for objects or outfits that look excellent.

fit check

Pop

A recurring social-media format where people post their daily looks, often with the clothes tagged or priced.

fit like?

General

The Doric 'how are you?' Standard greeting across Aberdeen and the north-east. Correct reply is 'nae bad' or 'tyaavin awa'. Say it back as a question and you've passed the Aberdeen test.

fit to be tied

General

Extremely upset or furious, as if needing to be tied down.

fittle

General

Food. Black Country variant of 'victuals' (vittles), with the v softened to an f. Almost always shows up in the phrase 'bostin fittle' — smashing grub — which is the unofficial motto of every Black Country pub kitchen and pork-scratching maker in the region.

fitty

General

Affectionate name for the M2 Browning .50-caliber heavy machine gun.

five by five

General

A report that a radio signal has excellent strength and clarity; colloquially, that everything is fine.

five elements

General

The five elements are the building blocks of Vogue Femme — the five things a walker has to command to perform it properly. They are: Hands (sharp wrist and hand illusion that tells a story and throws shade), Catwalk (the exaggerated feminine strut), Duckwalk (squatting on the heels and kicking forward on the beat), Spins & Dips (a 360 spin dropping into the dramatic dip — what outsiders wrongly call a 'death drop'), and Floor Performance (the acrobatic floorwork: fan kicks, knee slides, arched backs). Master all five and you've got a complete Vogue Femme.

five fingers of death

General

A dreaded MRE menu of five small beef franks, notorious among troops.

five-o

General

Police. Lifted straight from Hawaii Five-O, the 1968 cop show whose name nodded to Hawaii being the 50th US state. Picked up on the street in the 70s and never left — heavy in hip-hop ever since.

fiver

Internet

Slang for a five-unit banknote in the US and UK.

fix up

Street

An instruction to improve one's behaviour or effort, popularised by grime.

fixin' to

General

An expression indicating imminent intent to do something, though the doing may not happen immediately. A Southern grammatical staple.

fixing to

Street

Southern construction meaning 'about to' or 'getting ready to.' Used constantly across the South and lifted wholesale into Southern rap — Memphis, Houston, Atlanta. Often slurred to 'fixin' to' or 'finna,' which is now its own national slang word.

fizzling

Internet

Used for a mutual, low-drama fade where interest fades on both sides.

fizzog

General

The face. A worn-down corruption of "physiognomy". Almost always shows up in "put yer fizzog straight" — Brummie shorthand for stop sulking, you look miserable.

flair

Internet

A little label moderators let you stick next to your username or post title. On a sports sub it's your team. On a tech sub it's your job title. On a post, it's the category — 'Discussion,' 'Meme,' 'Serious.' Half identity badge, half filtering tool, and on some subs you can't comment without one.

flak

General

Anti-aircraft artillery fire, from the German abbreviation for such guns; figuratively, heavy criticism ('taking flak').

flake

General

The flesh of certain sharks (usually gummy shark), commonly sold in fish and chip shops.