Definition, Meaning & Synonyms
what-planet-is-someone-on
idiomatic expression
/wɒt ˈplænɪt ɪz ˈsʌmwʌn ɒn/
Definition
An idiomatic expression used to question someone’s mental state or awareness, often implying that they are not thinking clearly or are behaving irrationally.
Examples
- “I can’t believe you forgot my birthday! What planet are you on?”
- “She thinks she can start a business without a plan? Seriously, what planet is she on?”
- “You want to swim in that freezing lake? What planet are you on?”
Meaning
The phrase is often used humorously or sarcastically to indicate that someone seems to be out of touch with reality or acting in a strange manner.
Synonyms
- “What are you thinking?”
- “Are you serious?”
- “What’s wrong with you?”
