Probably Fluttershy, because he was an environmentalist and an animal lover.
Happy Birthday, Heil Hitler!
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>>266291Obviously Tree Hugger, because 4/20 is her favorite day.
>>266297This for canon pony
>>266332This for any pony at all
Happy (slightly belated) birthday, Fuhrer!
>>266369I once made a shitlib pothead distraught by claiming that "420 blaze it" was a Nazi dog whistle referencing Hitler's birthday and the celebration of the Holocaust.