boat riding

You assholes! he yelled, in his spandex from the bike trail, don't you realize what you're doing is dangerous! The boys were in a canoe in the rapids, standing up, drinking beer as they nimbly paddled around the rocks, underneath the overpass, through lands that hadn't been canoed in a hundred years, maybe two hundred, at least since the dams went up. The river quaking beneath them, they barely registered his shouts though they could see the frantically waving figure, all brightly tighted up, on the bridge above them. "whaddya think he wants anyways?" one asked the other, dunno, must have his panties all in a snarl.
The man on a bicycle turned to a passerby; "kids nowadays! thinking they can do whatever they want" the other man on the sidewalk looked him up and down, the fancy bicycle all shiny in the sun, form fitting clothes, sleek helmet, heartrate monitor, water bottles, chronometer, lights, velocity, the whole deal, shrugged and rejoined "some people have all the fun, and some people think they have all the fun…" and kept on walking.