7 thoughts on “I am black when clean and white when dirty. What am I?”

2. 

   Samueldoh

   May 5, 2020 at 10:51 am

   Blackboard

   Reply
3. 

   Aarna

   April 7, 2020 at 3:13 pm

   Black board

   Reply
4. 

   Carrot

   January 9, 2020 at 10:12 pm

   Chalkboard

   Reply
5. 

   kikoik

   July 28, 2019 at 12:08 pm

   chalkboard

   Reply
6. 

   none

   February 19, 2019 at 8:34 pm

   black board

   Reply
7. 

   Thanks

   March 27, 2018 at 11:56 am

   Black board

   Reply
8. 

   Rajesh Agarwalla

   March 27, 2018 at 4:42 am

   Blackboard

   Reply