Thicker Than Water

Twilight invents a magical talking tampon and she convinces Applejack to try it out. It goes as badly as one might expect, if not worse.

Twilight Sparkle is a genius. Who else in Equestria could have invented a tampon that can actually talk to its user? Such a novel item is bound to sell like hotcakes but first Twilight must find a friend willing to test it for her.