noun / ~の noun:

• (definitely) gay; gay person who isn't pretending to be gay; non-fake gay - slang ➜ がち・ホモ

expression:

• are you serious?; is that for real? - abbr. of それマジ？ - abbreviation - slang ➜ マジ

noun / ~する noun:

• oversleeping and hence feeling despair - from 絶望の起床 - slang

noun:

• negative personality; asocial type - slang - abbreviation ➜ 陰キャラ【いんキャラ】

~の noun:

• hottest (e.g. fashion); freshest; in vogue - slang

noun:

• private account (esp. on Twitter); account on a social networking service that can only be viewed by approved followers - slang ➜ 垢

noun:

• shitpost; worthless post or thread in an Internet forum - slang ➜ スレ

expression:

• best regards; please take care of; please do - slang - abbreviation ➜ 宜しく

noun:

• lamestream media; mainstream media - pun on マスコミ - slang - derogatory term - humorous term ➜ マスコミ・カス・ゴミ

noun:

• the left (wing); left-winger; leftist - slang - derogatory term - humorous term ➜ 左翼

noun:

• stupid left-winger - slang - derogatory term ➜ 左翼【さよく】

expression:

• it's the Liberal Democratic Party of Japan's fault; LDP-blamer - from 自民が ..; used to mock critics of the LDP - slang - derogatory term ➜ 自民党

noun:

• happy-go-lucky person; dreamer; intracranial flower garden [literal] - slang - derogatory term - idiom

expression:

• it's over; finished - slang ➜ 終わる【おわる】

noun / ~する noun:

• flooding a company, organization etc. with phone complaints (usu. loosely organized on anonymous online message boards) - abbr. of 電話突撃 - abbreviation - slang

pronoun:

• I; me - slang - humorous term

godan ~る verb:

• to steal; to shoplift - slang - Ōsaka dialect

noun / ~する noun:

• borrowing something without returning it; mooching - slang - Kansai dialect ➜ ぱちる・かりパク

expression:

• I can't help but laugh; I have to laugh at this - slang ➜ 草

pronoun:

• you - slang - male language - abbreviation ➜ お前

particle:

• (but) what about (the) ...; (but) what about those ... - following a noun; used to mimic and mock people who are upset over something - slang ➜ が

noun:

• user name (on an online forum like 2ch where the majority of users post anonymously) - slang - abbreviation ➜ 固定ハンドル
• user who uses a online handle (instead of posting anonymously); namefag - slang - abbreviation ➜ 固定ハンドル

noun:

• China - pun on 中国 - derogatory term - slang ➜ 中国

noun:

• South Korea - pun on 韓国 - derogatory term - slang ➜ 韓国【かんこく】

noun / ~する noun:

• female-to-male genderswap (in fan art and fan fiction) - slang ➜ 女体化