Haha yes! It’s cause she doesn’t quite know how human garments work, since she only saw it in the book she’s reading. The idea that won the poll said:
Twilight Sparkle, bipedal, forehooves braced against bookshelf. Looking back? Blushing aroused ‘oh no did I fail the test?’facial expression? Wearing human pants, backwards. Baggy and unfit for pony anatomy. Unbuttoned and unzipped, with visible ponut and marehood between the, zipper. Silly idea from ponies wearing pants backwards with tail through fly.