The closest was when my grandparent walked into my room and my back was facing the door it looked like I was playing with myself but when they walked over I was just button mashing a ps2 game (don't remember game) but needless to say it was a funny moment.
So just remember button mashing looks sus if your looking from behind.
Honestly I do not know. Imagine someone with VR glasses enjoying a porn game and unaware of their surroundings. That would be me. I also like OPs story.
Non, but I have nearly been caught watching. In my teen years the windows desktop was my favourite thing to look at on my computer, at least everytime the parents walked in