I think the last time I was sunburned in this fashion was 8th grade, after a day of kayaking along the Colorado River. My watershoes made an attractive Pokeball pattern-sunburn on my feet and I was actually rather proud of it.
It’s nowhere near the worst sunburn I’ve ever had, though. That occurred sometime in late elementary school, at a pool party where I applied sunscreen once and then promptly leapt into the pool. I was a borderline-febrile lobster by the end of the day. Incidentally, it was also the first time I met bossykiwi, but we didn’t figure that out until middle school.