I love this song, and the lyrics.
They're clever in a way.
"Why would you lie about how much coal you have
Why would you lie about something dumb like that"
If you forget the oxford comma in a sentence from
"I have 50 pounds of wood, 20 pounds of iron, and coal"
to
"I have 50 pounds of wood, 20 pounds of iron and coal"
You are now lying about how much coal you have.
Oh, and it's a catchy song.