I was going to ask about your social group's neologisms but then looked the word up to make sure I was using it right and discovered that's not what they're called when they're just used by one small group:

The most precise studies into language change and word formation, in fact, identify the process of a "neological continuum": a nonce word is any single-use term that may or may not grow in popularity; a protologism is such a term used exclusively within a small group; a prelogism is such a term that is gaining usage but still not mainstream; and a neologism has become accepted or recognized by social institutions.

So! Are there new words your household or friend group have invented and started using? What are they?

Any you've heard somebody else using that you've adopted or detested?