am I such a naughty student ?

T.T I have been disturb by my phone ring tone during my relax time. ohhh, its my mandarin teacher .. i don't know what can I say if I answer her call. I just go home from someplace boring which was full of book, education and bla bla bla. then I decided to message her and tell her that i am stress enough for today. let we practice it again tomorrow. hahaha. am I such a naughty student ? :bb