For me it was around 10 years ago. Back then I was living with my parents and we had a corgi. Let's just call him Rocky. Well Rocky was an older dog and would be in my room all the time as I loved him (the importance off that will come later). Back then I also had this weird OCD/agoraphobia of leaving my room late at night to use the bathroom, as the house was old as shit and would make these creepy ass noises. Anytime I exited the room I would have to jiggle the door handle 104 times and then turn the lights off and on 54 times, which was annoying as shit. Thus I would at times piss in bottles and empty them in the morning. Sometimes I would forget to bring a bottle or would be half asleep and if the pee was really "light" I would just crop dust the piss on my shag carpet in little poots. I only did this a few times when I was half asleep and then stopped, but cue next month and my parents decided they were selling the house.
My dad hired an appraiser to look at all the rooms and check their condition. When him and my dad came to my room he did what he did in all the rooms and checked the quality of the carpet. He shined some weird ass UV light on the carpet and it lit up like a murder scene. I never know I had pissed so much onto the carpet. Alll of those little baby pisses had added up to one great big granddaddy piss mosaic. "It looks like you have some potty from your dog here" he said. I replied back very ackwardly "yeah my dog sleeps here and is pretty old". He inspected it more and said "hmmm thats wierd this pattern is strange looking" referring to the dog pee, at which point I instinctively got defensive and said "my dog is old and can't help it!". I still don't know if he knew or not, but my dad looked at my really suspiciously when I said this as he knows some of the weird shit I can do. He told my dad they would need new carpet in my room at a cost of about 800 dollars, due to my piss damage, which made my dad pretty pissed at Rocky. Rocky also could not sleep in a room with the door closed until about a year after. I still feel sorry for him. An added bonus, the next month, once the house was sold, I was moving my bed with my best friend dad and mom and had forgotten my old pocket pussy under my mattress. Lifting that dirty mattress up and having that dirty unwashed silicone cunt plop out with not fun. Anyways just thought I would share this for fun.