When I was about that age, I was similarly lazy when it came to cleaning my room. I had gotten a package in the mail in a cardbox box, and never got around to removing the empty box from the floor of my room. One night I'm getting ready for bed, I had just taken a shower and was walking back through my room, barefoot, obviously. This empty cardboard box was in my way, so I gave it a sideways kick with the side of my foot as I walked past, and somehow I caught it at just the right angle that the edge of the cardboard SLICED into the side of foot, and I ended up with this huge gash in my foot, from my toe back down to my heel. I was freaked out, not so much from the pain or blood, but because I couldn't figure out what I did. It felt like I'd ran my foot across a razor blade or sharp knife, and not the edge of the cardboard box. So I hobble back to the bathroom, blood pouring out of my foot, and call out for my parents. So they and my brother are awake now, trying to figure out wtf I did to myself, while I'm trying to get my foot to stop bleeding with towels and washcloths. Eventually we decide I need to go to the ER for stitches, and the doctor there also can't believe this was all due to a cardboard box. To this day I have a shiny white scar along the side of my foot, and I'm now much more responsible when it comes to cleaning my room.