I live in a small mountain village in the Swiss Alps, and my flat is located above the local pub, with my balcony directly above the entrance to the pub. Yesterday evening I was standing on my balcony watching the village's teenagers celebrate on the street when I suddenly noticed three girls in their early twenties smoking outside of the pub. They were dressed in blue caretaker (janitor) suits and wearing yellow rubber gloves. Looking closely, I recognised one of the girls as the cashier at our local grocery shop, and since we usually have a good chat beyond small-talk when I buy there, I decided to go down and say hello.
She introduced me to her friends and when I asked about the unusual costumes, she explained that there were other seven girls inside the pub wearing the same attire, and that they knew each other from dancing lessons at the local dance school. They simply felt like being crazy that night. When they were finished smoking, they asked if I wanted to join them for a drink, which I happily accepted because I wanted to see if all ten girls were, in fact, wearing rubber gloves.
They were! All of a sudden, I was sitting at a large round table with nine girls wearing yellow household rubber gloves and one girl wearing pink rubber gloves. I knew immediately I would be posting about this sighting here and thought the situation was so crazy that you would probably believe I was making it up. But I'm not. This story is absolutely true.
Then, out of the blue, this girl I know from the grocery shop slid her hand into her coat's pocket, fished out a pair of yellow rubber gloves still sealed in the packaging and smacked them onto the table right in front of me.
"You're not being serious," I said incredulously.
"I am!" she said. "The girls and I made the pact to not take our gloves off all night, no matter what happens."
"That's true," the girl in the pink gloves said. "You can't imagine how much my hands are sweating in these, but I'm keeping them on."
"I told you that was the wrong brand," chimed in another girl. "My hands are dry and comfy like the minute I put these gloves on four hours ago. I could keep them on for a week!"
"You see?" said the girl from the grocery shop. "If you want to have a beer with us, it's only fair you put these gloves on."
Of course I hesitated for a second, but then I thought, if not on Fasnacht, then what other day would be appropriate for doing such crazy things?
Two hours and four pints later, I kissed my new friends goodbye and went back to my flat. Only when I tried to get the key out of my trousers' pocket, did I realise that I was still wearing the rubber gloves my friend gave me.
"Whatever!" I said to myself. "I'm sure she won't miss them. She probably nicked them from the grocery shop."
Janey
Carnival's not my thing (here in the Netherlands it's only celebrated in the south, while most of us "above the rivers" don't want anything to do with it), but If I'd had an experience like this, it might've just spun my opinion around 180 degrees! 
I've seen nothing "strange", a classic boring swiss day 
You really had much luck! 
Oh wow, you've made my morning!