Does your dog bite?

How do you respond to the question "Does your dog bite?"
I always tell people that they HAVE teeth, so they CAN bite!  
I honestly don't even understand why people always ask me that question!  
They're dogs!  
Just don't do anything that deserves a bite and you won't be bitten. 


Disclaimer: My dogs have never bitten anyone.  But its not a matter of ability.