Never did it myself on the F4 but......
I heard that for grins the Marines used to pull a Phantom up into the vertical and as it ran out of energy the Nav (or WSO in Yankspeak), having unstrapped, would pop his canopy, lean forward and mark a chinagraph cross on the outside of the pilot's canopy as far forward as he dare before smartly retreating and selecting his cannot closed just as the jet fell out of the air. Big balls....
Urban myth, or did it really happen?