How to deal with dumb comments

There was a comment that was made the other day in phy ed. class.  A immature boy was talking to my friend, who also has an eating disorder.  She made the comment about herself being fat.  The boy said, "oh yeah, your fat *sarcasm*."  He later told me that he said that because she used to be anorexic.  She was skin and bones.  I got instantly sad.  He didn't mean to make me sad.  I was just sad because I was never skin and bones.  If someone looked at me they couldn't tell I wasn't eating.  I was just tall and thin.  Ed decided to creep into my mind then and tell me, you can still be skin and bones, just don't eat and eventually, after the bloating stage and the hunger stage, you WILL be that skinny.
Listen readers,
If I almost died and I WASN'T skin and bones, what would happen if  I WAS?
Ed. is. evil.
you are NOT your ed.
you are wonderfully and beautifully made by God.  God makes NO mistakes.  He has a plan for you.  Trust in Him and things will fall into place.