[Hoot Gibson]

I didn't know that but, I always heard Heckle and Jeckle call other characters chuckleheads when I was a kid. So what's the rest of the story with regard to 1748?

I searched in vain for the first documented use. Mark Twain used the word in Life on the Mississippi in 1883, but the best explanation that I could find of the origin of the word is at World Wide Words.