fire in the hole

Interjection

 * 1) A warning of an imminent explosion in a confined space, especially a grenade or blasting charge.
 * 2)  A warning of any imminent explosive detonation.
 * 3)  A generalized warning that something is about to happen.
 * 1)  A generalized warning that something is about to happen.

Translations

 * French: tout le monde à couvert!
 * German: volle Deckung
 * Swedish: ,