this word will replace motor boating.
it also is the sound you make while performing the act of motor boating
you can do this by saying it really fast over and over again. or to repeat the word while shaking your head side to side in a motor boating motion.
i do think kids will be using this word soon, and remember to harble garble responsibly.
"Hey man! i totally Harble-Garble that girl last night"