Oh, boy, I had one of those bad burns as a child, myself. As I recall, even water on my skin hurt.
My grandparents moved to Florida in the fall of 1973 and we spent the following summer there. Right before we went I graduated 8th grade and there had been a number of school and church related “outings.” I spent most of my summer wearing a T-shirt because my shoulders had gotten so burned during those outings that I actually had sun poisoning.
I don’t do the laying out in the sun, and really never have, but I do get a “farmer’s tan” every year because of the amount of time I spend outdoors.