How do locomotives know where to go?
They have a lot of training.
Will invisible planes ever be popular?
What Easter candy has tons of friends?
What school subject really rocks?
What birds always travel in twos?
What's a balloon's least favorite type of music?
What is a CIA agent's go-to road trip game?
Why do people wear shamrocks on St. Patrick's Day?
Why was the archaeologist out of a job?
How do we know that Saturn was married more than once?
What says: oom oom oom?