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Champions of Equestria

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Description

Twi: Actually, I already know for a fact that pegasi wings are very sensitive, in similar ways to unicorn horns. This is a long established knowledge in basic pony biology.
 
But, I also happen to know from personal experience that Rainbow is especially ticklish. And any good scientific theory needs to be rigorously tested, to demonstrate its accuracy.
 
So, excuse me while I track Rainbow down~

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