He turned at the movement, spotted one of the strangest looking weapons he'd seen because it hardly looked functional in all definitions of the word, and that was about all he had time to take in.

The weapon flashed white, the Doctor suddenly hit with a wave of pain that he could feel dancing between both hearts and causing them to spasm in his chest for a long, agonizing moment. He flopped back against the second Jaffa as sparks of light stuttered across him and then faded as the Doctor passed out from the shot.

That was one way of shutting him up.