galahak
A galahak is someone who thinks they're cool, but only their best friend thinks they're funny. They also get good grades but only because they cheat.
He cheated on his math test. He got an A. I said, 'That’s a galahak move.'
She told a joke about Steve and a zombie. I laughed. My teacher said, 'What is that?'
He said, 'I'm not a galahak, I'm a legend.' I said, 'You’re a legend who got an A by cheating.'