So I was standing behind this girl I was standing behind this girl at a school dance while we were waiting to get some juice. She was really pretty, so I thought I'd break the ice with a joke. I tapped her on the shoulder and said ""Hey, what's blue and smells like red paint?"" She smiled and asked, ""what?"" As I was about to open my mouth, I accidentally tripped and knocked over everyone in front of me. I never got to finish the joke, but that's how I totally screwed up the punch line.