expression
jealous but also think they deserve death
Internet slang, often jocular. Used when someone is envious of another's situation (especially a male teacher having sexual relations with a student) but simultaneously feels the person should be punished or condemned.
あの先生、生徒と付き合ってるらしい。裏山死刑だわ。
I heard that teacher is dating a student. I'm jealous but he should be sentenced to death.
裏山死刑って言葉、ネットでよく見るよね。
You often see the phrase 'urayama shikei' online, don't you?
Standard adjective meaning 'envious' or 'jealous'. 裏山死刑 is a slang phrase combining the stem of 羨ましい with 死刑 (death penalty), creating a humorous, exaggerated expression.
A blend of 羨ましい (urayamashii, 'jealous') and 死刑 (shikei, 'death penalty'). The ateji 裏山 is used for the 'urayama' part. Originated as internet slang.