Good Riddles

Question: I run, I save people, and I was hit by lightning, And my public name starts with an "F"

Question: Why couldn't the skinny man eat all of his fat burger?

Question: It runs when I run and stops when I stop. It only works when you set it and then stop it. What am I?

Question: What kind of book can you use to go internet??

Question: What makes a skeleton laugh?