what the ...?
seriously, what kind of lame statement is that?
didn't you heard the news, how a young American teen killed himself due to the constant bullying of his classmates? and you are calling this "a normal part of growing up"?
Bullying is one of the worst things which may happens for a person during her/his life, especially when you are still small and need to learn how to adjust yourself with society, it causes one loses his/her trust to others for ever.