Describes a situation that occurs when a small aerodynamic metal projectile traveling at very high velocity makes contact with the cranium of a human being causing instant and extremely prejudicial trauma to the contents therein, typically causing a new orifice to open on the opposite side to the entrance of said projectile thus exploding the contents thereof out of it with great force.
1: "Would you like some Grey Poupon?"
2: "Why yes I believe I would..." <SPLATTER>
1: "Oh my!"
3: Sniper "BOOM! HEADSHOT!"
FPS Doug: BOOM! HEADSHOT!