What's the stupidest thing you've done on a dare?

I was stupid. I kissed a couple of boys on the cheek. It was sixth grade and they were grossed out when girls kissed them so the ones daring us thought it was funny. But there was a new boy who was older, about 14, from Italy and didn’t speak a lot of English. They dared me to kiss him. Unlike the others, he was delighted—and kissed me back.
I’ve never accepted any other dares of any kind, since.