gues the answer.

@hinaomar (1425)
Pakistan
November 2, 2006 6:20am CST
What is black when you buy it, red when you use it, and gray when you throw it away?
4 responses
@rodmac (94)
11 Feb 07
coal
1 person likes this
@rodmac (94)
28 Feb 07
coal
@lynn3024 (198)
• Canada
12 Feb 07
i would have to say a match
• Oman
19 Feb 07
I think the answer is charcoal. Heres one from me: There was a man one night. He started to run straight forward. Then he turned left. Soon after, he turned left again. Then he started running toward home. When he got home there were two masked men waiting for him. Who were they?