The sound that comes out of your mouth whilst listening to a Justin Bieber song.
Friend: Have you heard JB's new song?!?!?

Me: OH MY GOD. *grenkles*
by gregichelii July 06, 2012
the sound when you hear a Justin Bieber song
Ana did you just grenkle at my FAV song?!
by Gregichelii June 19, 2011

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