The other day, my son forgot to finish his homework. He told me, "It's ok dad, I did the best I could and that's all anyone can ask." I totally agree with that saying, but he hadn't done the best he could! I guess that his school taught him that saying, but neglected to tell him what "doing your best" really means. We had a good talk about it.
Oh also, the other day he came home singing, "Yo yo, my name is Joe, my butt is bigger then Mexico." One kid in his Kindergarten class learned it, and by the next day it was all anyone could talk about.
Have your kids picked up anything random at daycare/preschool/school?