Definitions by Roving Jay

Head full of smurfs 

When you have too much going on, and you are feeling overwhelmed, you are said to have a "head full of Smurfs"

Fred was juggling multiple priorities, he was so overwhelmed that he couldn't make a decision, his excuse was "sorry, I have a head full of smurfs at the moment"

Head full of smurfs by Roving Jay October 18, 2011