I wish I could yodel.
This 12 year old girl taught herself how to yodel from a book. I never thought about doing it that way, but now that I've seen the clip on You Tube, maybe I'll give it a try.
In a similar vein, I wish I could do the auctioneer's chant like John Korrey. You can watch him on You Tube as well.
There are plenty of places to learn these things, and once the technique is mastered, it takes practice, practice, practice to do it well (and fast).
That's the problem, of course. I've never been big on practice, which is why I didn't become a great pianist in spite of nine years of lessons.
Writing, I guess, is the exception. I keep on writing, hoping that practice will make perfect. But maybe if I gave yodeling one more try...