i had made a bad mistake on a work project , and my coworker took the blame for it . i felt bad for not speaking up to my boss . that really sucks . did you make it up to your co-worker ? i apologized to them later about it . it was tough hearing our boss scolding them about it though . that 's good to hear that you and your co-worker mad amends . live and learn !
Not taking responsibility for one's own mistake.