clicker finger
In this day and age, the clicker finger has replaced the pointer finger. With the revolution of the personal computer, nobody points anymore, they click. So the clicker finger is actually your index finger.
Oh man, today was the lamest work day. I spent the entire day on the computer and now my clicker finger is killing me!
Itchy Clicker-finger
Like trigger-finger, when you click your mouse one too many times in a hurry and end up in some world you didn't even know existed.
Damn, I was just trying to post on Facebook but my itchy clicker-finger sent me to a Bible Study group.