one-arm lunchroom
A diner serving snacks and simple meals.
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Where will you be? Anywhere UK & IrelandUnited StatesOnline slangBusiness jargon
one-arm restaurant
Synonym of one-arm lunchroom.
one-bagger
A single (a one-base hit).
one-banana problem
A problem that should be easily resolved.
one-eyed jack
Either the jack of spades or jack of hearts, on which the jack is commonly depicted in profile.
one-eyed king
The king of diamonds in a deck of playing cards.
one-hitter
A cannabis pipe for a single inhalation.
one-holer
An outhouse with a single hole.
one-horse race
A contest in which one candidate or competitor is clearly superior to all the others.
one-minute man
A man who suffers from premature ejaculation.
one-pump
To kill someone in one shot with a pump action shotgun.
one-spot
Synonym of buck (“a dollar (one hundred cents)”)
one-tap
To kill (an enemy) in one shot.
one-throat
To eat quickly and with minimal chewing, especially if to the point of swallowing food whole.
oneitis
Attraction towards a single potential partner to the exclusion of other possible partners.
ones
The cells located on the ground floor.
ones and twos
Turntables used by DJs.
oneshot
To kill or destroy with a single hit; to instakill.
Onika Burger
Referring to a Nicki Minaj (whose real name is Onika Tanya Maraj-Petty) Twitter meme, used as a way to call Nicki Minaj fat and saying that she eats burgers.
onion
Of a drug, an ounce.
onion bag
The goal net.
onion booty
Large, attractive female buttocks.
onkus
Inferior; unpleasant; unacceptably bad.
only dead fish go with the flow
Conforming to the influences of others does not allow a person to follow their own goals and desires.
only in Ohio
Internet slang used to describe strange or surreal occurrences humorously attributed to Ohio; compare Florida man.
only Nixon could go to China
Only a politician or leader with an impeccable reputation of upholding particular political values could perform an action in seeming defiance of them without jeopardizing his support or credibility.
ono
good-tasting, delicious.
onside
Within bounds.
ontogeny recapitulates phylogeny
The physical, cultural, moral, or intellectual development of each individual passes through stages similar to the developmental stages of that individual's species, society, or civilization. Not taken literally since the late 19th century.
OOC
Initialism of out of character.
oof
Used to express discomfort, surprise, dismay, or sympathy for someone else's pain. It is also the sound of a Roblox avatar when it dies or respawns. Thus the verb "to oof" can mean killing another player in a game or messing up something oneself.
oofiness
The quality of being wealthy.
oofless
Short of money; poor.
oofy
Having lots of money rich, wealthy.
oogle
A hobo or transient who is homeless by choice rather than necessity.
ooh, matron
Highlights a statement which contains a double entendre or appears sexually forward.
oojah
Something whose name is unknown or unimportant; a thingy; a whatsit.
oojiboo
An unspecified object; thingy; whatsit.
oomf
Acronym for "one of my followers" or "one of my friends". Can be turned into "oomfie" to represent affection towards another individual.
oomska
Filth, dirt.
oontz
Imitating an electronic drum sound.
oontzy
Characteristic of oontz music, with prominent electronic drum sounds.
oops baby
A child born as the result of an unplanned pregnancy.
oowop
An uzi submachine gun.
ope
Clipping of operations, in terms of an organization.
open it up
To speed up; to gun it.
open out
To expand, to widen, to unwrap, unfold or uncover, to spread out from a compact state.
open species
A species of furry that is open source, not copyrighted by its creator; a fictional furry species that anyone is allowed to create and sell.
Operation AIPAC Fury
The 2026 Iran war.
Operation Epic Fail
The 2026 Iran war.
Operation Epic Fear
The 2026 Iran war.
Operation Epstein Fury
The 2026 Iran war.
operational excellence
Sustainable improvement of key performance metrics.
opp
Short for opposition or enemies; describes an individual's opponents. A secondary, older definition has the term be short for "other people's pussy". Originated from street and gang culture. Dexerto claims that the primary definition stems from the secondary one, which was derived from a 1991 Naughty by Nature song titled "O.P.P.".
oppai
A woman's breasts, particularly of an anime or manga character.
oppai loli
A character in fiction with the frame of a loli but with a disproportionately large chest.
oppie
Diminutive of op shop.
oppo
A friend, associate or colleague.
opportunity knocks at every man's door
Everybody gets opportunities.
opportunity makes the thief
People are more likely to steal something if presented with a convenient opportunity to do so.