It's ok it's not a gun thread...
A 'machine-gunning' effect is the best way I can describe it and it's way cool as used here. How is John Hermann making that rapid 'poppapoppapoppa' when he goes up the neck to vary it up on 'Pretty Little Shoes'? Is that a bar chord he's using at 9, 7 and 5? The clip is too dim and fuzzy for me to see.
https://www.youtube.com/watch?v=I7ECfNIfEhg&feature=player_embedded#!