The first time I visited Australia I went with a girlfriend and we stayed with her Aussie friend. The second day I was there I was still hung over from the welcoming party and had a three-beer lunch to compensate.
After lunch we hit the beach, where it was 34 degrees celsuis in the shade of the beach umbrella. The girls went surfing and I fell asleep underneath the umbrella.
When they woke me up, an hour later, the umbrella had been blown 6 feet away and I realized I had been sleeping in the direct sun. I had SPF 15 sunblock on, but I'm a Canadian of Scottish/Irish blood, so I don't tan. I burn. The girls were worried, but I didn't feel that burnt, so I thought I might be OK.
Wrong. By nightfall, I was as red as a cooked lobster everywhere except for a small portion of my lower back. I was in he!!. My eyes were watering from the pain.
My Australian host called her mother, who lived down the street. She brought some aloe, which helped a little. She then called her neighbor, who brought some topical medication. More neighbors were summoned with more miracle cures to be applied until I appeared to be frosted like so much wedding cake.
I couldn't get to a doctor for two days, and when he saw me he actually laughed, and then scolded me saying I should know better. He gave me more topical medication and told me I would have to suffer through it.
Sleep was nearly impossible and infrequent. Showering was a delicate matter to say the least. For two days, I didn't leave the house. I had to stay out of the sun as much as I could afterwards.
The only upside is that I kind of became a ward of the small town I was staying in. Neighbors brought me sweets. Everyone from the shopkeepers to the mailman knew about "the stupid Canadian" and asked about my progress. I felt like an honorary citizen. Everywhere I went, people stopped to talk to me, remind me to put a hat on or reapply my sunscreen and share a laugh with me (OK, at me).
Two weeks later, our hosts threw a goodbye party for us and a hundred people showed up - virtually everyone I had met in the course of my trip. They all wished my girlfriend and I the best and I was really choked up. Especially when they brought out a cake for us - in the shape of a lobster.
I go back every year.