Finding out who's the genius in the group

So, everyone has that friend who has a 3.5+ GPA right? Well, these days, GPA's just don't cut it anymore, the public demand common sense! So, want to find out who has common sense in your group of friends? Follow these instructions:

1)Find a spot to practice a seemingly dangerous act and practice the act flawlessly without you're friends finding out, (ie: Skill-less skateboarder (you) attempting to do a kickflip, the you practiced in secrecy and as far as your friends know, you know nothing about the fundamentals of pulling off anything)

2)Ask a friend to (or you do it yourself) Bring a filming device (cell phone, iPod Nano, camera, etc...)

3) Invite all you're friends for a hangout night

4) Tell you're friend to film you doing said stunt (everyone has that friend who really wants to see you get hurt for entertainment value)

5) IMPORTANT: Fake wiping out (or not, get bonus originality/stupidity points and an awesome scar if you're lucky)

6) Lay down as if you're dead (if faking) or watch the video and see who asks if you're alright and keeps asking it after getting no response or someone who immediately says "Call 911" after asking if you're alright

Obviously, the dude who asked if you're okay repeatedly is a dumbass since it should hit him that you're unconscious after the "accident" and the smart one is the guy who reacted by trying to save you're life.