Steven Logan frightened his victims with his bizarre behaviour at the branch at the Glasgow Fort shopping complex last March 21.
He initially spoke to one worker about the item he had earlier bought at Ann Summers store in Edinburgh.
The 52 year-old claimed it had snapped and then showed the woman a photo of the toy, which appeared to have a crack in it.
The worker told Glasgow Sheriff Court how they continued to have a chat on how best to use the device.
She then recalled how Logan suddenly showed her a “different” photo of the sex toy being used.
The witness was asked by fiscal Ramsay Cunningham how she reacted.
The young woman replied: “I said: ‘please do not show me that’ – but I saw the picture.”
Mr Cunningham asked: “Did you want to see the image?”
The woman said: “No – no one wants to see that at work or at any time trying to do their job.”
The startled assistant exchange the item, but then reported what happened to her manager.
She stated that she exchanged the item and reported what happened to her manager.
This witness denied a suggestion in court that she had not seen the more graphic photo.
A second woman had also been in the Ann Summers shop that day.
Logan came up to speak to her outside.
She said: “He was asking what items I purchased and if I bought lubricant. I answered that I did not feel comfortable and it was not any of his business.”
The woman stated that Logan went on to show her the picture of the sex toy being used after telling her about his experience with it.
Mr Cunningham asked this witness how she felt and she replied: “Very uncomfortable, frightened.”
Logan continued to make a number of sleazy comments as he tailed her to the car park including asking if she had a boyfriend.
In his evidence, Logan admitted showing the image to the second woman adding: “I regret that – I completely misjudged the situation.
His lawyer Brian Fitzpatrick asked why he did and Logan replied: “I simply do not know.”
But, he denied showing the graphic snap to the shop worker as he was “fully aware of my surroundings.”
Logan, of Kilmarnock, Ayrshire, was found guilty of intentionally causing the first victim to look at a sexual image.
The first offender was also convicted of intentionally directing sexual verbal communication towards the second woman.
Sheriff Shona Gilroy told Logan that the two women were “credible and reliable.”
In convicting Logan, she added: “I can infer that he wished to impose his will on the second woman. He suggested that it was an adult conversation – it was quite the opposite.
“The woman on the CCTV was seen looking away from him and he turned 45 degrees to look at her. Her lack of engagement was tangible.
“She did not consent to be shown the image.”
Sentence was deferred pending background reports until next month and Logan was granted bail meantime.
