So, it might be the whole perfectionist/oldest child thing, but if a mistake is made I have a compulsive need to make sure people know it wasn't my fault. If I screw up, fine, I will own it all day long. But I really want to throw a coworker under the bus right now over a stupid clerical mistake. It looks like it's my fault, but it totally isn't, and I had to come in on Saturday to fix it. Boo!
Also, the coworker in question is my husband, so this impulse to blame makes me an extra terrible person, no?