I’m white when I’m dirty and black when I’m clean. What am I?
Give me a hintThe hint
Think of a classroom before whiteboards.
Reveal the answerHide the answer
A blackboard
Source: Anonymous, 20th century
Lee WLee WMost things look better clean. This one goes dark.
I’m white when I’m dirty and black when I’m clean. What am I?
Think of a classroom before whiteboards.
Source: Anonymous, 20th century