–noun
1.
a word used by all ages to
congratulate someone of a success
2.
mere way to wish someone luck for an upcoming event.
"I have a huge test today, wish me luck!"
"Well, scooby nana to you!!"
3.
mostly used within individuals who are close to one another.
4.
a way to repeatedly say something to annoy the person next to you, or from across the room if willing to be loud enough.
--> Has
absolutely nothing to do with the fictional dog named
Scooby Doo.