被自杀 (bèizìshā): to be 'suicided' — a death offi…

Grammatically impossible — 自杀 ('suicide') is intransitive, so the passive marker 被 shouldn't apply. That's the joke: the construction itself flags absurdity. Part of a wider 被X family that emerged on Chinese internet around 2008 — 被就业 ('be employed,' i.e. fake employment stats), 被代表 ('be represented' without consent), 被自愿 ('volunteered against your will').

register

Politically sensitive internet slang. Used skeptically of official accounts of custodial deaths. Avoid in formal or PRC state-aligned writing.