When I was at the tail end of High School I went to the beach with family friends. I did put on sun screen and attempt to protect myself, but it wasn't enough. I was burned so badly that my chest and shoulders were basically bubbles for a few days, and it was fun trying to sleep. I made the same mistake again years later (sometime in 2006 I want to say) when I visited an old High School friend and we hung out in her pool. No idea how badly I got burned that time because we honestly didn't spend that much time outside in the pool. Regardless I still have freckles on my shoulders from those times.