混弟

It's a mix of '混 (hùn) ', loosely meaning 'hang around doing nothing important', and '弟 (dÌ)', referring to a younger male. Generally, this nickname describes someone irresponsible, laid-back, possibly troublemaking, who chooses to go against mainstream success standards. Often, there’s self-deprecating humor in this term, and users might identify themselves with non-seriousness or defiance in social environments.