stick a fork in something

From the practice of sticking a fork in meat in order to determine whether it is done (cooked).

• Audio (General Australian):

  (file)

stick a fork in (something)

1. (idiomatic, informal) Used to indicate that something or someone is finished, or, in a broader sense, defeated or ruined.

   I'd play the last level with you, but I'm out of lives. Stick a fork in me!

• stick a fork in me, I'm done