嘎了

gǎle
(slang) (I'm, you're) toast; so screwed; it's game over (for sb); (sth) bit the dust

CEDICT

slang

Entry Composition

1 嘎 gǎ
  1. (dialect) ill-tempered; ornery
  2. (dialect) naughty; mischievous
2 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)