I think primers are out to get me.  
First thing, I'm loading a bunch of 9mm, which was once fired brass from the LGS.  Turns out I didn't look close enough, because about 400 of them had marks from either a primer feeder... or it looks like someone tried to punch large pistrol primers in them...  But that made a ring around the primer pocket, so my primers kept catching in those rings.  Needless to say.. chamfering 400 primer pockets isn't the way I wanted to start my day.
If you are never going to do this in your life... don't do it.  
Had a casing move in the shell holder, when to move it with my finger.. of course I kept the ram moving like an idiot to size and decap, finger slipped on top of the case...  decapper pin right through my finger nail!!  I thought I was going to die.  Usually I'm really careful about this stuff... but everyone has to play the idiot sometime?  
Just after that, getting a new box of small pistol primers...  the plastic falls out of the sleeve... and I have to find 100 primers under the bench....
And now... run out of small pistol primers... have to wait till I go to anchorage to get more.  
I think I better quit while I'm behind for the day...