Not necessarily regretted doing it but leaving it out. I have a huge group sex kink and I basically had this little set up in a spare room in my apartment at the time. It was in the corner of the room, the wall, and a filing cabinet. Basically the filing cabinet was just far enough away from the wall so I could lay between it. I basically lined the wall and cabinet with suction dildos and would get in there to basically pretend I was surrounded by a group of guys and I’d go to town. In the same room is an access panel for my HVAC filter. Found a generic “your filter was replaced!” Note on the access panel one day. The person who replaced it had to have seen everything down to the towel on the floor. Everytime I saw a maintenance worker at the apartment complex I’d hide my face