Possible Clues:

• Wall scribblings
• The writing is on the wall and it can be cutting about endless drug taking at institute
• Writing on the wall
• The writing on the wall?
• Defacements on public walls
• The writing is on the wall and it can be cutting about endless drug taking locally at institute
• The writing on the wall
• Scrawls on walls
• You may read these at your convenience
• Works on walls