Whistling In The Loo
Don’t be weirded out when you are in a public restroom and hear the person in the next cubicle whistling out loud. It is likely that they come from the military! Although no one is sure where the tradition originated, it continues to be widely practiced.

Whistling In The Loo
Knife Hands
A knife hand is what you call the hand gesture soldiers make when they are explaining something. This involves locking the fingers into a flat and tight surface so that they can use it for gestures. Military men and women often find themselves using this to show directions even after service.

Knife Hands