1) A comedic character on the British Comedy "Black Adder".
2) An overly dramatic twist in a story, usually having someone die suddenly; pulling out of a story suddenly; being overly dramatic (i.e. "pulling a").
Baldrick: I'm leaving! This is crap! *dies suddenly by a large 40 foot pillar thrown at him from some giant he was fighting*
Friend 1: GAH! He pulled YET ANOTHER BALDRICK!
Friend 2: He'll be back in a week.
Friend 3: Ya, I bet he's hitting "refresh" right now.