Facetiousismistically
A stupid word that people use to act like they're fancy, but it just means being a sarcastic jackass.
My teacher said, 'You're being facetiousismistically rude!' and I just laughed in his face.
He used it in a group project and everyone thought he was a total poser.
She texted me: 'You're being facetiousismistically annoying again!' and I just replied with 'Whatever.'