The act of, either voluntarily or involuntarily, ceasing one's life by being hit with either the front or the rear of a moving vehicle, most commonly a Jeep, but occasionally a military tank, APC, or, in rare cases, a transport helicopter. Most commonly heard of in 'First Person Shooter' games like "Call of Duty" and "Command & Conquer: Renegade", but it has been known for this to happen in "Real-Life". But in "Video Games", Windshield-Smearing is sually followed by loud, side-splitting laughter from the 'Smear-er', and loud, audible curses from the 'Smear-ee', both of which will be typed out and posted "in-Game" after a period of about 30 seconds.
Oh my GOD!!! I just smeared a WIndshield!!!