1 definition by Alexandre P Ramos - SP-BR

Basically, "Yippee ki-yay" is an old, American cowboy expression, like: ”yippee”, or “yeehaw (heehaw)”, or “Whoopee”; expressions of extreme joy or excitement, commonly associated with cowboys. As an interjection, “yahoo”, plays a similar role.
PS.: Many people mention the expression “Yippee ki-yay” in the movie “Die Hard” as the origin of the work, but it is important to know that this word is much order. Like I said: from the “cowboys-days”.
Here is one example of use: I’ve been meaning to meet someone for, like, a month. Today, she finally was available. My reply? “Yippee ki-yay”, woman! Pick you up at eight.”
by Alexandre P Ramos - SP-BR November 4, 2015