Addendum (revision?) to "Addendum"

(This feels meta, but I think everything is meta, so it's probably not.) 

Turns out, I do have reason for my misanthropy: 

         17 student papers to grade
     +  guy singing/mumbling the lyrics to the music at Starbucks 
         grrrr 

If you'd prefer, I've got another: 

         book I NEED for paper I'm writing is to be found everywhere
              except places that are convenient 
     x  STILL waiting to hear about my essay after 16.5 weeks 
         double grrrr 

I could keep going, but subtraction and division wouldn't really make sense here. Besides, I'd rather spend the energy on hate.