Image imported from derpibooru
Original Description:

Trixie finally relaxes and takes one of her sandals off to get started on oiling her feet. Right as she was about to begin she noticed what was really bugging her feet from earlier, it was Snips and Snails. They were somehow shrunken down to size and completely exhausted from riding underneath the huge feet of their giant blue guardian, hiding the fact from her that they enjoyed every last bit of being under her feet and being that close to a girl, feet or not. She demanded to know how they were shrunken down. They told her that while they were carrying one of her beach bags they found one of her magical shrink powders in her bag meant to deal with beach pest she doesn’t like or to humiliate Twilight. They goofed off with it, deciding to “FAAFO” and they indeed found out when they were now much much smaller than her bags. Angry at this she still made them massage her feet after she gave them a quick break. She then eventually returned them to normal.