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Description
Continuing my Bottled Six series of anthro MLP ponies/genies in bottle. 
Originally I’d envisioned the Princess of Friendship in a fairly traditional bottle, but considering her nerdy, scientific background I could see Twi preferring a Klein-style bottle instead.
This time it’s Twilight Sparkle.
Now, hmm…perhaps do Discord flying a projective (air)plane! xD
In that same technical, topological sense, neither does an opened bottle of ketchup, but you know the difference between it being in the bottle and it being all over your table, don’t you?
Technically speaking, she already is. (Even more technically speaking, Klein bottles don’t have an “inside”.)