When I was in the Air Force some poor Warrant Officer started a Reply-All clusterfuck when he replied to a base-wide email about issued Android phones.
After about 30 Reply-Alls some very senior officer replied (to all) something to the effect of "Nobody else Reply, or your ass is grass" to which some joker from Special Operations replied (all) "Copy, Sir".
Some of the most fun you can have in the public sector.