Kids, before we watch the video, I have to tell you: I just got a flu shot the other day and it did not hurt even a tiny little bit. That’s because the needle is very small and your neurons …. that feel the pain … are far apart. So, many times the shot does not hurt, sometimes it does.
So you should get all your friends together and make a list of who’s shot hurt, who’s didn’t, and then you can make an estimate of what the chances are that the needle hits the neuron. And if you think THAT sounds like fun, you are well on your way to being a total science geek.
OK, here’s the latest rap: