During my sophomore year in college, I went on a road trip to an out of town formal with a group of friends who were, at the time, into a little bit they called "Yay/Boo."  Example:  "Yaaaaaaay!  Tonight's game was so exciting!  Booooo college basketball is over for six months."  

I have my own "Yay/Boo" moments from time to time.  

Yay!  Our landlord got us a new fridge!

Booooo I still haven't had time to go to the grocery store.   

 I have high hopes for tomorrow, though.  Stay tuned.