Due to the popularity of the Cock Enhancement created by one of her Wet Nurse graduates, the Futanari Headmistress decided to introduce it as a new tutorial syllabus for the Wet Nurse to apply onto their Master's cock. This tutorial; presented by the Headmistress is for kinky Masters who are into sounding and 'cock replacement' but also shy about it. One transparent cock sleeve is used to hold the ribbed sound and vibrator to replace the Master's cock. Sadistically teasing. Then a realistic cock sleeve is worn over to look like the cock receiving HJ, but underneath many pleasurable teasing transpired~ Being replaced by sex toys and then the clitty hole being fucked by a ribbed sound. Enjoy the lesson~