Behind you!

Behind you!

Look behind you!; There is danger behind you! "Behind you!" shouted Tom just as a car raced past and nearly knocked Mary over. Alice shouted, "Behind you!" just as the pickpocket made off with Fred's wallet.
See also: behind

Behind you!

phr. Look behind you!; There is danger behind you! (see also check your six, on your six.) “Behind you!” shouted Tom just as a car raced past and nearly knocked Mary over.
See also: behind
References in classic literature ?
You walk ahead and I'll walk immediately behind you