what is black when you buy it red when you use it and grey when you throw it away!!!

Question: what is black when you buy it red when you use it and grey when you throw it away!!!
- Keywords:
  black,
  grey,
  red,
  throw
Asked by charlottelouise to Cesar, Emily, Jamie, Kate, Philippa on 15 Jun 2011.
- Jamie Gallagher answered on 14 Jun 2011:
  
  haha good one! I shan’t spoil it for the others yet though.
- Kate Clancy answered on 14 Jun 2011:
  
  Is this a British version of the newspaper joke?
  
  “What is black, white and red all over?”
  
  I’m probably missing something… dumb Yank that I am!
- Emily Robinson answered on 15 Jun 2011:
  
  Newspaper! 😀