The Riddle Thread…. Home › Forums › Humor & Entertainment › The Riddle Thread…. This topic has 2,249 replies, 1 voice, and was last updated 16 years ago by noitallmr. Viewing 1 post (of 1 total) Author Posts November 12, 2008 12:47 am at 12:47 am #1237206 noitallmrParticipant Please post some below with the answers. Here’s one to start off with: Q: What is Black when buying, Red when using and Grey when you throw it away? A: A Piece of Coal…. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In