The debate between the Weaver and Isosceles stances of shooting is as old as time itself–or at least as old as a few decades. You’l find opponents and detractors of both styles (with the claim that the other style is fine for a shooting range but not practical for actual combat). But here is an unbiased explanation of both.
Not a Weaver Stance
On a lighter note, these stances are not specific to “guns.” These stances are also used by police officers when using other, less lethal projectiles like tasers. However, contrary to Meet the Fockers, this is not really a Weaver Stance (at 1 minute and 40 seconds).