I was about 13-14 and feeling my oats and expressing my vocabulary of profanity, especially using the word "Shit".
Finally Mom had enough.
"Son", she said, "you seem to be quite an expert on shit."
"Let ask you a question."
"When you look at chicken shit, you see white stuff and brown stuff."
"What is the brown stuff?"
I stood there looking stupid for maybe a minute or two.
Finally Mom let me off the hook and said, "Son, the brown stuff is also chicken shit."
I wanted to slither away and hide under a rock.
It was one of those life lessons you learn from Mom.
Lew