That is ****ing awesome..I didnt' realize (yes I"m slow) that it was that taunt you could kill with...I knew the pyro had his, but it makes more sense, he actually shoots flames.
I remember briefly reading that there's an achievement where you kill people with your taunt, but to do it with an invisible "gun hand" is kind of gay...
But oh well, I'm still going to try it.
Where's my TACO? He'll take one for the team...
