I was thinking about things my mom used to say.
They were "fresh out" meant there were none there.
He's not "dry behind the ears" meant he's too young to be doing that or he doesn't know what he's talking about.
That is a "tow headed boy." I thought this meant his head was shaped like a toe.
And when I was very young: "Stop crying or I'll give you something to cry about."
Second part. How to embarrass mother without meaning to.
She had a bridge club who occasionally had a luncheon. I came home one day, looked at the table and announced, "Real Butter." We usually had oleo margarine which looked like white lard. A little packet was thoughtfully provided to mix in with the white stuff to make it yellow - like Real Butter.
A couple who they played bridge with always served a dessert after they played the game. I went with them because we had never heard of a baby sitter. The delicious treat was ice cream, chocolate syrup and nuts. It was a very large serving. The older daughter of the hosts declined her portion. I piped up with "I'll eat it!" There was an admonishment from my mom at that time. . . "Mary Lou!"