The Kansai dialect. Culturally, it is associated with comedy (specifically, ツッコミ) and is sometimes imitated by people from other regions (エセ関西弁(かんさいべん)) to exploit this.

Tōhoku dialect

(slang) eating one's bento (packed lunch) before lunchtime (usually applied to middle and high school students)

Kyaraben, a style of elaborately arranged bento (Japanese boxed lunch) which features food decorated to look like people, characters from popular media, animals, and plants.

red iron oxide / a kind of cloth first imported from Bengal during the Edo period, made using silk for the warp threads and cotton for the weft

the Tochigi dialect of Japanese

the Ibaraki dialect of Japanese

office work / office worker

lawyer who is owner of a law firm

lawyer who specializes in disclosure of identification information of the sender in the Internet