Is there a risk? Definitely. Don't you think the first guy who decided to put gel in his hair and "spike" it up looked like an idiot? Of course he did! In fact, he STILL looks like an idiot to this day. But its important to remember that trends aren't about looking cool. Trends are about BEING cool.
So here are your instructions:
1) Implement the trends found here
2) Act like the new trend is perfectly normal
3) Watch for others to catch on
Each new trend will contain a "sign that this trend has caught on" and also a place where you can check the latest status of the trend and see whether the trend has indeed caught on or yet. I also urge you to post the results of your implementing the trends in the comments section. It is perfectly acceptable for your stories to be untrue, as long as they are both funny and believable.