If she flinches and squirms, she’ll wiggle her butt a little.
Perhaps that was the tease and provocation that led to this in the first place. That, and being over-confident that in that outfit, pulling her skirt up would be too awkward in public.
"...a heavy round wooden paddle with a hole in the middle that leaves fearsome red bruises. And then the shaking girls with beaten butts and tearful faces receive another terrible punishment..."
If she flinches and squirms, she’ll wiggle her butt a little.
Perhaps that was the tease and provocation that led to this in the first place. That, and being over-confident that in that outfit, pulling her skirt up would be too awkward in public.