Answer:
What binds two people yet touches only one?
Don't do this in the shallow end.
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
What word starts with 'E', ends with 'E', but only has one letter? It is not the letter 'E'.
Without this, eating food and Steven Spielberg's career would be very different.
What do angels sing in the shower?