after a google search found these
https://www.fanfiction.net/s/4200186/1/Constant-Vigilance
https://www.fanfiction.net/s/5683614/1/How-Will-It-Turn-Out
https://www.fanfiction.net/s/5903010/1/Healer-Granger
its part of a 4 part series by Lidane on here
http://hp.adult-fanfiction.org/story.php?no=544201205
http://hp.adult-fanfiction.org/story.php?no=544201209
http://hp.adult-fanfiction.org/story.php?no=544201210
http://hp.adult-fanfiction.org/story.php?no=544201213
I read a story so long ago, about when Harry was a student and he got spanked by Severus as a punishment and he got off on it.
I can't recall any more than that, can anyone help me?
blessed be
http://www.experienceproject.com/stories/Ab-Dl-Stories/1520427?n=0&aok=Confirm
you have to register for the site, and its only 1 chapter, its Harry and Tonks