I think that stance is a Kung Fu stance, isn't it? One of the Kung Fu forms? Anyway, they're both total fvcktards, but one of them is slightly smarter than the other. I don't like those "yo mofuggah I'monna fugg yo azz up fo shizzle" boneheads. I also don't like people who run around acting like they're martial arts masters or something. Being good at it is one thing, but don't be a show off.
Your first clue as to the doofus not actually being trained (but just acting like it) is when he starts to goose-step in that stance. Throwing his leg forward from the knee down like it's loose tissue just hanging there instead of being the balancing support structure (as opposed to being the primary weight baring support structure). He looks like a one-legged goose-stepping nazi when he advances.
Second of all, when he was actually attacked by that gang banging dumbass, his "skill" suddenly went out the window. Now, that might be common for a new student, but after that first swing, this "skills" just never came back. Most martial arts students, even if they're intimidated enough by the first swing to momentarily forget about their training, usually are quick to fall back into it.
Thirdly, the knockdown. What the crap was that?! I've seen fully extended arm strikes before, but they've always been with a knife-hand and never with a fist. That was just fvcking lazy and he's simply lucky he landed it.
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Oh, and the other guy -the gangbanging dumbass. Would YOU talk sh|t to someone, see him bust out in some wicked fvck-you-up stance, and STILL stick around to get your ass kicked? Not if you had any brain cells you wouldn't.