Anyway, this week's dumb human phrase is 'hot diggity'. People say 'hot diggity' when they want to sound especially stupid while trying to convey a sense of excitement. The word has no rooted real-world meaning - it was apparently gibberish that was made up one day by a guy named Al Jolson (see picture below). But then, what can you expect from a guy with such hits as 'There's a Rainbow Around My Shoulder', 'Ragging the Baby to Sleep', and 'Yaaka Hula Hickey Dula'?
Honestly, the human language is ridiculous.