fit to be tied

Fit to be tied is the idiom used when someone is very angry, agitate or irritable. Fit to be tied is referring to someone needing to be tied or restrained because they are getting very angry and agitated; someone who is acting this way might need to be restrained. Figuratively, the phrase fit to be tied is used when describing the current emotional state of someone who is losing their temper or getting very angry about something.