Speaking In A.C.R.O.N.Y.M.S.
The military has more than its fair share of acronyms. BOHICA, SNAFU, and WAG are just some examples. You will likely hear terms like these coming from a soldier. Do you have no clue what they mean? Clearly, you were never a soldier.

Speaking In A.C.R.O.N.Y.M.S.
Honking Twice
Soldiers typically honk the horn twice to let others know that they are backing up. After they spend time in the military and return to civilian life, quite a number of these soldiers continue to do this.

Honking Twice