Flat-Hatting
From a 1944 Army Air Corp Training Manual called Flat-Hatting Sense - very funny.
"Flat-Hatting is a form of flying that discourages longevity. Originally the term simply meant flying low needlessly. That definition has been expanded to include grandstanding, or showing off flying foolishly and carelessly. The term itself is said to have arisen from an incident in which the wheel of a low-flying plane struck a pedestrian on the head and crushed a new top hat he was wearing. Besides being grounded for quite a stretch, the pilot had to buy the pedestiran a new hat, costing $12.50, including tax. Hence, the name "Flat-Hatting" which is probably as good a name as any."
Oil-burning - An Oil Burner route is the name given to an authorized area that military jets can low level in, for practice.