In Japanese, konna koto mo arou ka to こんな事もあろうかと, meaning "[I] thought something like this might happen, [so I prepared this in advance]," is a phrase commonly as a gag in comedy manga and anime, by a character who is just too well prepared, specially for a situation nobody would have expected to happen.
In Japanese, you よう (or yoo よー, yoo よぉ with a long vowel) may mean various different things depending on context, specially as there are multiple homonyms so it may spell different words. For disambiguation:
Ironically, you よう doesn't mean "you," the second person pronoun. For that, yuu ユー would be the katakanization, e.g. ai rabu yuu アイ・ラブ・ユー, "I love you."
In Japanese, you よう, also spelled you 様, homonymous with ~sama ～様, has several different meanings: it refers to the way something is "like," to say one thing is like another; to say that it's like something that isn't true were true; it can be used to say someone is or isn't the sort of person that would do something, also works for sorts of things; it's used to make future-tensed certain phrases (verbal statives) that would otherwise be present-tensed; it can refer to the desired way things should be that you attempt to cause by doing a certain thing; it's used to say that you have been making yourself do, or not do, something, trying to gain a habit or lose it; it's used in sentences that express wishes, specially in prayers; it's used to say there doesn't seem to be a way to do something; and it's used to express you have made a conclusion based on some evidence but you aren't certain the conclusion is true, you're merely proposing it based on available evidence.
In Japanese, you 用 means various things: it refers to something you have to do, a "task" or "business" you have to care of; the "use" of a thing in doing a task; "for what task" is a thing suitable, its "purpose;" and to refer to the usefulness of a thing in the sense of how many uses it has, what tasks it can do, its "purposefulness."(日本国語大辞典:用)
In Japanese, naru なる means various things. It translates to "will become," "will be," "will get," or "will start," "will stop" when used as an eventivizer for stative words; it can translate to "is" in the sense of "turned out to be" when used as natte-iru なっている; it can be used to create honorific expressions in the patterns o~ni naru お〇〇になる, or go~ni naru ご〇〇になる; it can mean "to come to be" when used with a few words, and "should not," or "can not" in the same sense as "must not," as naranai ならない.
In Japanese, suru する is a verb with several complicated uses: it translates to "to do X" as an auxiliary verb that turns nouns (called verbal nouns in this case) into verbs (called suru-verbs); it can express humble speech (kenjougo 謙譲語) in the patterns o/go-deverbal noun-suru おＶする, ごＶする; it translates to "to make X become Y" as a lexically causative eventivizer forming an ergative pair with naru なる, "to become," and "to decide on," "to choose," and "to pretend that" various things for various reasons; it can translate to "to do stuff like" when used with the tari-form; it translates to English copulas of sensory stimuli such as "feels," "smells," "sounds," "tastes" as an intransitive cognitive stative verb in a double subject construction with "feeling," "smell," "sound," or "taste" as its small subject, as well with other nouns for feelings; it similarly translates to "to feel X" when used with a null-marked psychomime, to "to make a sound" when used with an onomatopoeia, and all sorts of meanings with other mimetic words; when preceded by the to と particle it can quote what someone else determined, it can make a stipulation in a contract or law, establish a hypothetical scenario, hint the passage of time with mimetic words, and in relative clauses it can mean something has something else for something else-else; it translates to "to try to" when preceded by the to particle after a volitional form; it translates to "to wear X" when used with some clothing terms, and more generally to refer to one's appearance translating as "to have X" with terms for body parts; it translates to "to be an X," when used with an occupation or type of person; it can mean to use the functions of different body parts; it can mean to cover things with different covering objects; it can mean to be worth a monetary value or to pass an amount of time. For example:
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In Japanese, nandeyanen なんでやねん, meaning literally "why is [it]," is a phrase popularly associated with tsukkomi ツッコミ, the act of "retorting" and the comedian doing retorts in manzai 漫才, a type of comedy done by a duo where one says something stupid (the boke ボケ), while the other "retorts" by saying they're wrong or questioning them, sometimes physically hitting them, e.g. with a backhand slap on their chest.
This phrase is in Kansai 関西 dialect, and Kansai is associated with manzai, so one can guess its popularity is due to manzai comedians from Kansai using it.
In Japanese, boke ボケ means "idiot," or something stupid someone does, specially in comedy.
In Japanese, tsukkomi ツッコミ means "retort." In manzai 漫才 comedy, in a boke and tsukkomi routine performed by a duo of comedians, the boke ボケ is the idiot doing or saying something ridiculous, while the tsukkomi is the "straight man" who retorts, reacting to, pointing out, or calling out the ridiculousness of the boke for the audience. For example:
Often, the boke is an unpredictable, random, crazy character that completely lacks common sense, and is complemented by a more logical, grounded-on-reality tsukkomi character, who is there to provide a sane point of view in the comedy and try to insert some common sense in the show.
In Japanese, pon ポン has multiple meanings: it's an onomatopoeia for tapping, bopping or hitting a drum, it's a play in mahjong, and it's the morpheme hon 本 with a handakuon 半濁音.
In Japanese, nomikai 飲み会 means literally "drinking meeting," or "drinking party," that is, "to meet," au 会う, in order "to drink," nomu 飲む.
Typically, this term refers to coworkers meeting after-work to drink alcohol in an izakaya 居酒屋, which is a sort of Japanese bar-restaurant.
In Japanese, shichi-san-wake 七三分け, meaning literally "divided," wakeru 分ける, in 7:3 parts, refers to a hairstyle in which the hair is parted to one side, ideally 70% to one side, 30% to the other side.
It's also pronounced hichi-san-wake ひちさんわけ. Which side doesn't matter, 7:3, 3:7, it's all the same thing.
In Japanese, a "salaryman" is a white collar office worker employed in any stable corporate slave job; it isn't a specific profession, but more like a pencil-pusher in a desk job kinda thing, typically seen wearing suit, tie, and suitcase. It's katakanized sarariiman サラリーマン, also romanized sararīman.
Sometimes, it's abbreviated to riiman リーマン.
In manga and anime, a salaryman is archetypically a typical, common, average, generic Japanese adult man, who tends to have a non-confrontational personality—non-adventurous, weak-willed and servile, a pushover—often working overtime to the death at some exploitative company, and conforming strictly to the formalities of an extremely vertical organizational hierarchy by respecting the authority of his superiors.
In Japanese, mama まま and mama ママ are two different words with different meanings.
Spelled with hiragana, mama まま means how something continues in a way unchanged. It has several usages. Rarely, it's spelled with kanji, as mama 儘 or mama 随. It's sometimes pronounced manma まんま instead.
Spelled with katakana, mama ママ means "mom," an affectionate way to refer to one's mother, or one's "wife" in some cases.
Not to be confused with maa maa まあまあ, which is an interjection.
In Japanese, mesen 目線, literally "eye line," can mean various things: one's "line of sight," their "gaze," the direction toward which they're looking, their viewpoint, how they view things, and black lines covering someone's eyes.
In Japanese, maji-manji マジ卍 means the same thing as maji-yabai マジやばい. It's a JK slang used when something is intense, either intensely good, cool, awesome, epic, or intensely bad, horrible, awful, terrifying, dangerous.
The manji 卍 is also used as an internet slang when you're hyped up, excited for something.
See the article about the usage of the swastika in Japanese for details. This article is just for examples of usage.
