Describe a time you had a minor accident

I’d like to recount a rather embarrassing and slightly painful minor accident that happened to me about six months ago while I was attempting—quite unsuccessfully, I might add—to build a massive bookshelf from a flat-pack kit I’d ordered online. To be perfectly honest, I was feeling incredibly overconfident about my DIY skills that afternoon. I had just finished watching a couple of home renovation shows and thought, "How hard can it be?" I was trying to tighten a particularly stubborn, poorly-aligned screw at the very top of the frame. Instead of going to the garage to get a proper ladder like a sensible person, I decided to stand precariously on a rickety kitchen chair. Suddenly, as I leaned in to apply more pressure, the chair slipped on the hardwood floor, and I went tumbling down like a house of cards. I didn't suffer any life-threatening or permanent injuries, thank goodness, but I did manage to knock over a large, full cup of black coffee that I’d stupidly left on the edge of the table. It drenched my brand-new rug and several of my expensive college textbooks. I also ended up with a quite spectacular, purple bruise on my left leg and an even bigger bruise on my ego. Once the initial shock and the low-level throbbing in my leg wore off, I couldn't help but see the absurdly funny side of the whole situation. I must have looked ridiculous flailing around on the floor. However, it was a very timely and necessary reality check that taught me a valuable lesson: cutting corners to save five minutes usually ends up taking twice as long and costing twice as much in the end. I eventually finished the bookshelf, but I did it while firmly planted on the ground, following the instructions to the letter. It’s now a standing joke in my house that I’m banned from using any tools without adult supervision.