TEACHER: How old were you on your last birthday?
TEACHER: How old will you be on your next birthday?
TEACHER: That's impossible.
STUDENT: No, it isn't, Teacher. I'm eight today.
TEACHER: George, go to the map and find North America.
GEORGE: Here it is!
TEACHER: Correct. Now, class, who discovered America?
TEACHER: Willy, name one important thing we have today that we didn't have ten years ago.