Did you see other girls get the slipper at school?

If we were a bit slow changing after gym, the teacher would sometimes hurry us up by announcing that the last one out would get the slipper. I particularly remember when Sandra, who was very brainy and a real top dog in the class was unaccountably last and had to bend over for a whack with the slipper. I don't think she could believe it because she was never usually in trouble.
However, bend over she had to in the presence of those of us who were collecting our things outside the changing room. We watched interestedly as she got a right stinging whack on the bottom which caused her to yell. But although obviously discomforted she took it like a real sport and was able to raise a smile on her very red face as she walked off rubbing her behind. "Wow! That didn't half sting!" she was heard to mutter. She went up in our estimation after that!