Concerned Teacher...

Luke's teacher tracked me down when I was picking up the kids yesterday. She mentioned she was a little concerned and there's something she thought I should know. She said she thinks Luke is 8 going on 13 because he seems fascinated with the opposite sex lately and yesterday he drew a picture of a "super bra". I had a hard time not giggling at this point but I stifled it. I apologized to the teacher and told her I would talk to him about it. I don't think what he drew was such a big deal but I did tell Luke that school isn't the place for anything like that and not to draw underwear anywhere. I don't know maybe I'm making nothing out of something that could be more serious? Feel free to express your opinions. I'm difficult if not impossible to offend.