Mealbreaker (n.): a nasty, non-edible surprise found in food while it is being eaten; often lawsuit-provoking, sometimes fabricated, always disgusting.
Ground beef has been recalled in the past for a variety of reasons -- largely due to contamination of some sort, such as e. coli. A "chewed-up pen" is not typically one of those reasons, but that's just what was found in the ground beef at Raley’s Supermarket in Antioch, California. A worker discovered a piece of the pen while cleaning the meat grinder. Some of the meat from that grinder was likely already for sale.
Anyone who purchased the recalled meat is eligible for a refund. For more information about the recall, click here.
In terms of Mealbreakers, this one is actually on the milder side, as ingesting small pieces of plastic is less horrific than some of the instances below. Check out previous Mealbreakers: