Lord You Know Who "[@Spiritus Arcane":](/images/2337866#comment_8980086
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No, it wouldn't. Just have Sunset bring the pastries with her to Earth.
Also, considering that Pony Twilight met Sci-Twi at the end of "Friendship Games" and the universe DIDN'T explode, the whole "the universe explodes if a Pony meets her human counterpart" thing is bullshit.