Logic Riddles

Question: You put me on a table and cut me, but you don't eat me.

What am I?

Question: A man was sitting on his couch and searching for the English Channel.

How did he find it?

Question: What is one in every doll, in every doll, in every doll?

Question: There are two boys at an international math contest in December 2013; one is British and one is American. They both write their names, the date, and their answers on the paper. The only problem is that they both have the same name and the papers cannot be told apart.

What is the date?

Question: What is the easiest way to poke a balloon without popping it?