Alright, here's the deal. If someone is making a tongue-in-cheek kung fu scene, there is always a character who suddenly pulls a pursed-lips expression, makes random mystical hand movements, and says 'WOOOOOOO-ooooOOOO-WAHHHHHHHH!' Anyone doing this can automatically be written off as having zero martial arts talent - unless it's an elaborate Confusion Fu double-bluff... This trope's been around for a while, but it doesn't look to be going away any time soon. Of course, Bruce Lee himself gets a pass for his own shtick. See also Kung Foley, What the Fu Are You Doing?