Have you ever considered tubing down a storm drain? (Well, don't, unless you're a fan of being exposed to toxic gases, vermin, disease, contamination, etc.). The dudes in this video took all the risks and tubed down a storm drain anyway, and I had fun watching them do it.
It looks like they went right after a big rain, and they went pretty fast, too. Luckily, they did a walkthrough of the drain beforehand. If they hadn't, they would have crashed into some very sharp rocks at the end of the drain.
If you've tubed down a storm drain without injury or illness, I'm envious. I wish there was a safe way to do this because it looks like so much fun. Thinking about the horrendous lines at waterparks, the risks of a storm drain almost seem like the more appealing option.
See also: Storm drain graffiti
