A subwoofer.
How do you make a dog say meow? Put it in the freezer, then get a chainsaw and cut it. MEEEEEEEOOOWWW!!
If you let the dog in, it will shut up.
A subwoofer! Now again: What do you call a dog in a sub? Chinese food!
This.
You take the letter "S" out of "sub", and the letter "F" out of "way".
He was Haydn