Holy Moses!

Today on the way home from school, Henry was pointing out road signs to me.  He pointed to one and said, "yook, mommy, a diamond!"  I hadn't seen it so when it showed up in my rear-view mirror, I gave him the praise he was looking for.  "Holy Moses, Henry!  That IS a diamond!  Great job!"  My precocious young man responded with, "Don say 'hoey Moses', Mommy.  It not nice."  Having had no idea that 'Holy Moses' was so 'not nice,' I asked him what I should say instead.  He thought about it for awhile before saying, "well, you can say 'hoey cow.'"