I thought that list was pretty witty.

Here's a possible addition-how bout "Jams" for a musical "J" word?

Instead of "jams" meaning "music" or "songs" or "playing music just for the fun of it" or this definition: http://www.answers.com/topic/jam-session?cat=entertainment or this one for jam bands: http://www.urbandictionary.com/define.php?term=jam+band , the Hillbilly or Redneck Music theory could say something likeL

"Jams"- "another name for jelly that goes well with peanut butter and bread" [yeah it needs some work but you get my drift]

or

"Jams" -another name for sweet potatoes

[as in "Yams"]

Ya see where I'm comin from?

And personally, I think that the Hillbilly or Redneck Music Theory missed out on an obvious play on words with the entry for "Coloratura Soprano" when they didn't say anything like
"A Colored bull fighting opera singer"...