This Is Why You Shouldn't Use Brass Knuckles to Kill a Spider
Fear makes us act irrationally. That's kind of its "thing."
Which is why Big Nick admittedly dumb reaction to the sight of an unacceptably large spider crawling on his bathroom wall is understandable.
But just because we the viewers can forgive Nick his momentary lapse in judgment in the form of a brass knuckle solution to his arachnid problem, that doesn't mean his mom will.