Cryptobro means: An enthusiastic cryptocurrency supporter, usually male, especially a dogmatic, condescending one.. It is crypto-trading vocabulary; common on X, Discord servers, and trading-Telegram groups your teen may follow. It is generally derogatory or offensive; worth a quiet word about how it lands on the person being described. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.