非死不可

Fēisǐbùkě
Facebook (Internet slang, pun reading "you must die")

CEDICT

internet slang

Entry Composition

1 非 Fēi abbr. for 非洲 Fēizhōu, Africa
2 死 sǐ
  1. to die
  2. impassable
  3. uncrossable
  4. inflexible
  5. rigid
  6. extremely
  7. damned
3 不可 bùkě cannot; should not; must not