"Man eating shark" is the choice
You are eating lunch on a table and there are ten flies on the table. With a quick swat you are able to kill three flies. How many flies are left on the table?
A man was surfing one day when he saw another man being attacked by a shark. The first man did nothing to help the second, but watched with interest. Why?
I am the type of room you can not enter or leave. Raise from the ground below. I could be poisonous or a delicious treat. What am I?