Sorry Sis

I don't know if my sis is stupid or I'm just too bad.... She is in form 3 and she brought handphone to school. But she stupidly didn't silent it. Hahaha....

I sent a message to her and what happen next? The phone was confiscated. I wanted to say "I'm sorry, its just too bad" but in the end I said "Sorry, its just an accident"