Originating from Team Fortress 2, when the Engineer will shout "SENTRY DOWN!" if his sentry is destroyed.
Used on the internet to mean that the defenses are down; used jokingly in a flame war.
Used on the internet to mean that the defenses are down; used jokingly in a flame war.
by scy1192 April 28, 2008
Get the SENTRY DOWNmug.