Here are a couple that we use a lot at work...
GSI (Give a Sh-- Index). Generally used when refering to how much you care about an assignment. Like "My GSI is -15 right now" if you really don't care, or "I got a raise and my GSI went up 20 points!"
CRS (Can't Remember Sh--/"Stuff") As in you forget where you put something and attribute it to CRS syndrome setting in.