Great, now they are gonna try to pass legislation against walking and using your cell phone. It could be dangerous to stupid people, and god forbid we have a few less stupid people in this world.
Which is why I said the words would be associated with the idea in the same way that a picture can be associated with an idea, and in exactly the same way that the sounds of speech are associated with ideas.
Though I can't imagine that a deaf person would be any good at charades or solving rebuses.