You reach for a spoon to start eating, but your mama hands you an arrow instead and points towards the coat rack. Hm, that's not like her… Suddenly you're filled with doubt. Is this really your mama? You doubt it.

Now full of doubt, you decide to test your mama by putting her in a guillotine (ぎ). It sounds harsh, but the guillotine is the only way to clear up your doubts.