kakapužník
A silly name you shout at people you don't like, like when you’re trying to be cool but you're just being annoying
I shouted 'kakapužník!' at him during the game because I didn't know what else to say.
She called me a kakapužník in front of my friends, and I just walked away.
He used the word 'kakapužník' in a text, and I thought he was trying to be funny, but he just sounded silly.