Kackalack
A loud, stupid sound made by a half-wit from Staten Island or Poughkeepsie when they think they're the funniest person alive.
'Kackalack!' he yelled, even though no one was laughing.
She did a full dance and said 'Kackalack!' like it was a trophy.
He texted me 'Kackalack' because he thought it was a meme.