Gallic
Gallic is when gals talk like they're drunk on coffee and nonsense, making up dumb words that sound like English but are totally meaningless and useless to anyone who isn't a girl.
'I'm going to go do my *brouhaha* now,' she said, and no one knew what that meant.
'Why is this word *poutine*? It's just French fries and cheese!'
He asked, 'What does *flambé* mean?' and she just laughed.