(What a) Fry: Someone or something unusual, wacky or crazy. “Have you seen Lenny’s neon animal print shirt today? What a fry!"
Burn: The exclamation following an insult. “Are you still talking? Burn!"
Copacetic: An affirmation expressing satisfaction. “Everything is copacetic.”
(The) Skinny: Confidential information or a deeper understanding. “What’s the skinny?”
Cool Beans: Another way to express approval or excitement; great, awesome, pleasing, etc. “This podcast is cool beans.”