What has a ring, but no finger?
What goes around the world but stays in a corner?
If a chicken says, "All chickens are liars" is the chicken telling the truth?
What English word retains the same pronunciation, even after you take away four of its five letters?
If you look you cannot see me. And if you see me you cannot see anything else. I can make anything you want happen, but later everything goes back to normal. What am I?