plumcrackered 

to unintentionally "bite the bullet" for someone else.

Person A throws a pie at Person B. While the pie is still airborne, Person C walks into the room and into the path of the pie. Person C gets hit with the pie and exclaims "I've been plumcrackered!"

plumcrackered by Egghead Comics April 6, 2011

plumcracker 

someone who unknowingly walks into the path of a bullet (figurative or literal) meant for someone else.

Person A throws a pie at Person B. While the pie is airborne, Person C walks into the room and the path of the pie and gets hit. Person C is a plumcracker.

plumcracker by Egghead Comics April 6, 2011