Chinese Guarantee Syndicates and the Fruit Machine
When I was speaking to a group of Bank Security people in New York City yesterday, I mentioned "machine rooms" -- which are rooms full of Apple iPhones that are used to send iMessage phishing spam. Someone in the audience asked "Where would they get that many phones?"
The kids like to use the acronym "IYKYK" (If You Know You Know). I learn new IYKYK phrases in Chinese Telegram every day.