(Greek mythology) Pandora's box

(slang) club where people go to hit on people or get hit on

(informal) someone or something lucrative; cash cow

the Ark of the Covenant

(slang, derogatory, video games) an Xbox fanboy or fangirl, Xbot

offertory box

Used other than figuratively or idiomatically: see 一 and 本 (one thing) / Short for 一本勝ち (ippon-gachi, “winning in one blow”).

a comic book, a cartoon book

hardcore pornography; 'underground' pornography showing uncensored genitals. Technically illegal in Japan.

banned book