Fairday's Riddle: Throwing Words...

Hello, Riddlers! It's good to be back. Can you guess our theme this week? I've never seen this in person, but it's on my list of things to do. ; ) ~ F
You'll listen up when I speak. I might be funny or sound weak. I don't care, for I've no mind; dumb and empty is my kind. Sound dispelled by teeth and tongue travel far when words are flung. Master's always got my back, lending voice for what I lack. 

What am I referring to? Stop by Wednesday for the answer.
I gave you a clue!

FEAR NOT THE UNEXPECTED