Originally posted by Emon
The correct command is:
/bind x +taunt
Replace X with the key you want the taunt to be bound to, I have mine on O. You may be able to set it to one of the F# keys but you'll have to figure out the right code for it. For example I think for page down it's pgdn or something.
What's wrong about /bind x "+taunt"? It's actually a more standard way of binding something... especially if you want to get all crazy with it and add more stuff to do on one bind.
/bind x "+taunt; say ^1Look what I can do!^7"