Longboarders. Longboarding just got popular here in the past year or so, and it seems as if the new participants are either too high or too stupid to pay attention to their surroundings. It would be one thing if they could stay in one of the marked lanes but they insist on swerving back and forth across the whole path or roadway, unpredictably, and they're always listening to way-too-loud music with earbuds so it's impossible to get their attention until you're right up upon them...

I'm tempted to start blasting them with an air-horn as I carefully pass, but that would be too mean for my blood.