I remember that i've heard it in some military situation in a movie.
C chargenburst New member Joined Jan 25, 2010 Member Type Student or Learner Apr 28, 2010 #1 I remember that i've heard it in some military situation in a movie.
Barb_D Moderator Staff member Joined Mar 12, 2007 Member Type Other Native Language American English Home Country United States Current Location United States Apr 29, 2010 #2 It's "on my mark" and it means "When I say to do it" or "Wait for my signal to do something."