Lol,
I got tapped on the sholder while shooting once, as a fellow shooter thought my P08 was not ejecting spent cases. Then I explained to him the quirky way the luger throws out it's cartridges and that a small overhang above the shooting point usually catches most of my spent cases
I've been hit in the forehead several times and indeed some rounds made their way into my collar.
There is also another trick you can do with a P08 which is pretty impossible on other guns:
Aim with one hand, bring the pistol closer to your eyes by bending your arm (point the elbow down and bend the wrist somewhat). Then casually pull the trigger. Two advantages occur. Aiming is easier and the spent case jumps over you.