It also refers to some unmentionably obscene mud-moving behaviour, rather than to the purity of air-to-air combat, against a fellow knight of the sky....
I vaguely remember from Brawdy days that one would draw an attack route on a 50thou map showing an 'IP-to-target' track of about 60-90s, drawn with opposite sides of a nav rule to a Pull-Up Point....
Come the day...find the IP, re-start the watch, look for PuP and remember the sight piccy. Then pitch up, pause, roll and tip, acquire, track, film, recover, break, watch for the wingman, reform battle formation and rush off on escape heading to the next turning point....
In reality, it was an obsolete and probably suicidal tactic, but acceptable for initial tactical training and rather good fun - until some misery-guts realised that our off-range strafe profiles bottomed at about 100 ft agl. But over Viet-Taff territory, who cared?