Why are you flying off the handle like a lunatic today?
Tips
register
Three distinct uses by context: (1) medical - febrile convulsion in children; (2) HVAC - 抽风机 (extractor fan); (3) slang - 'losing it / acting crazy', as in 你抽什么风 ('what's gotten into you?'). Slang use is everyday and not vulgar, but informal.
