The picture was the last straw.
The decision also turns out to be the last straw for his wife, Dualla, who decides to leave him.
The last straw that determined action was the discovery of a paper docketed " Not to be opened till after my death," which was nothing but a railing accusation against herself.
These articles, harmless as they may seem to us, were the last straw that Scottish loyalty could bear.
My bruised knee is the last straw and it's got to go.