Sugarcube Corner had a bell on the door, but it was solely for the Cakes’ benefit. As long as Pinkie knew the pony walking in, she could Sense their arrival and greet them accordingly. As such, Twilight was greeted by a “Hi, Twilight!” the moment she stepped inside.
Mrs. Cake smiled at the counter. “She’s in the kitchen.” The smile took on a particular twist that formed when somepony was trying not to think too hard about Pinkie’s… Pinkieness. “And… well, you’ll see.”
Twilight just quirked an eyebrow and walked to the kitchen. After a quick sanitizing spell on herself, she poked her head through the swinging doors and saw exactly what Mrs. Cake meant. “Pinkie, what are you—“
“What?”
Twilight went in and moved to Pinkie’s other side. “What are you doing?”
“Oh!” Pinkie went from confusion back to her usual massive grin. “Rarity wanted some help with some new accessory ideas, so I’m trying one out before I tell her about it.”
Twilight spent a few moments trying to work backwards through Pinkie’s thought process, which felt uncomfortably like trying to navigate the Everfree at night. Pinkie just kept kneading dough. Finally, Twilight sighed and said, “Pinkie, a boutonnière is a flower worn in the lapel of a suit jacket.”
“Oh!” Pinkie took out the horseshoe. “That makes a lot more sense.”
Best guess is that Pinkie is wearing multiple weird accessories, at worst, pierced herself with a horseshoe.
But that what of what she's wearing and how it's applied is deliberate.
If so, nice!
Also, nice sanitizing spell!
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I believe that Pinkie stuck a horseshoe in her ear, which is why Twilight had to switch sides to talk to her.
I don't get it.
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It may help to know that the word in question is pronounced "boot-in-ear."
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Oh, I get it now.
i’m dying
Oy
"falls onto the floor, convulsing with laughter"
Perfect Pinkie moment. You're unnervingly good at those
..........groan.
Oh Pinkie. I do so love your shenanigans.