mind your back
mind your back(s)
Make way or be careful because someone behind you is trying to move past you. Mind your backs, we're coming through with an extremely hot pot of water!
See also: mind
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
mind your back (or backs)used to warn inattentive bystanders that someone wants to get past. informal
Farlex Partner Idioms Dictionary © Farlex 2017