I taught single gender and had girls...one day they were mad at me and called me fat...I "freaked" out and said "oh my god, thanks for telling me, I had no idea!" Then I followed it up with be careful with your thoughts, actions, and words, because most girls grow up and look just like their mommas. At that point one girl told one of the mean girls she should stop eating cheetos cause we all knew what her momma looked like...