负智商
[fù zhì shāng]
Means 'Negative Intelligence Quotient' directly, which sounds sarcastic about low intelligence levels. Generally, such nicknames may imply humor or self-deprecation (in some cultures, individuals may use this as a joke to downplay oneself); however, calling someone with negative IQ could still sound impolite or nonsensical literally. Such usage may vary depending on different contexts, cultural backgrounds or online subcultures, but commonly isn’t seen very positive