>>You have just injected them with one of the most potent and toxic drugs - MATERIALISM.

Not just the gifts, but a long lead-in period of anticipation and excitement, with little or no sleep the night before, and then fill them with a sugar rush or candy and commotion and too much stimulation for any sentient being, with too many gifts to appreciate any one of them and all the lights and decorations and then all the noise noise noise noise! (When, exactly, did I become the grinch?)

A chemical stimulant would probably actually calm them down under the circumstances.

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