I understand that some Monero terms originate from [Esperanto](http://weuse.cash/esperanto-corner/). What is the Monero specific meaning and origination of the following non Esperanto words and phrases?

1. Is it true?
2. Soon
3. Don't buy Monero
4. Darkflarb
5. Going full Pegasus

Please add definitions for any additional well known terms or phrases I overlooked.