You might also like three of my F/m F/M stories. One is called Kites Knickers and Canes
. It is a humourous/ slapstick story which involves a school aged teen boy getting up to mischief with his neighbours large knickers and of course she catches him in the act of procuring the contraband items and spanks him very thoroughly and effectively! Naturally the teen boy is very humiliated and embarrassed by his elderly female neighbour's actions and his own foolish mistakes...not to mention his awareness that this could all get back to his high school mates since his friend is waiting for him on the other side of the hedge!
Another two of mine which may tick the boxes for you are:What The Window Cleaner Saw
... this starts out as a witnessed M/F spanking and soon results in a F/M spanking. The story takes place in a work environment (Motel) where corporal punishment is an alternative to the sack for certain offences.
The youth's well witnessed spanking continues in the follow on story, What Rachel Saw
If you get chance to read any of them I would appreciate your feedback