My Great Uncle Bob (an ex-commando with the demeanor of Mr.Rodgers)once told me that on base they had a "Bitching Post"; A single post set into the ground some distance from the barracks, painted white and clearly marked as such. The idea being that if someone was feeling a bit angry, shat upon, or just "out of sorts with the world", there would be an "appropriate" target unto which to verbally express these feelings.