shit in classroom..???

Today i wake up early althougt today is saturday becouse today i have to go to school...haiz...when i go up the stairs,then i see many students standing at the corridors..my brain starts thinking..why they stand at the corridors but not sit in classroom..???afther that i go in the classroom..nothing happend ler..then my friend(Bobo) from other class come in my class and tell me that there is 'SHIT' near to teacher's table..wah..really oo..becouse i sit a bit far from teacher's table then i don't know ma..hee..after that,the 'SHIT' become famous..haha..including our Mathematic teacher..she also use this topic to teach..haha..it is reallt funny..