A 60-year-old college worker posted a pretty grim pornographic video of herself online, a tribunal heard.
In the clip, seen by her colleagues, Dr Robyn Williams was said to be readying herself for sex and explaining what she was doing to the camera.
Dr Williams, also known as Jane, also posed for a number of pornographic images and posted them on Twitter.
She has been accused of unprofessional conduct and a lack of integrity, with her case put before a Fitness to Practise hearing.
The Education Workforce Council panel heard allegations that some of the images of Dr Williams, who worked at the GRWP Llandrillo Rhos-on-Sea campus from 2006, were intended for publication in an adult magazine.
The GRWPs health and safety boss David Phillips was made aware of the video in April 2016 when two members of staff approached him with a Twitter link.
Giving evidence, he said: I thought it was pretty grim. I recall viewing images of Robyn Williams who was naked and there was graphic text.
He added: I recognised Robyn Williams face and I have no doubt it was her.
Mr Phillips said he had to stop looking at the content as it became more graphic.
He did not know which account had posted the images and gave the phone back after seeing part of the video.
Dr Williams did not attend the hearing but said via email that she did not post or upload any of the images shown on Twitter.
The panel assumed Dr Williams denied all the allegations in her absence.
The hearing continues.