Maybe he was trying to scramble the letters in 'santa' to end up with 'satan' but got a little bit carried away? Easy mistake to make I reckon.

Still... probably should've made sure it said 'satan' and not 'atnas'. Probably.
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"It stands to reason that where there's sacrifice, there's someone collecting sacrificial offerings" - Ellsworth Toohey, Ayn Rand's The Fountainhead p.637