JapaneseLanguage term which translates like: 

 Seppuku - suicide
 Mono - thing
 Da - is.

See also CareerLimitingMove 

''Sounds more like CareerTerminatingMove''

----
I thought in Japanese, "Mono" was a thing as in a device or object.  "Koto" was a thing as in an event or action.

''Elsewhere, I see "'''seppukumono''' : situation calling for ''seppuku''".  Found randomly on the internet, so therefore will be either almost correct or completely and utterly wrong.''