blow (one's) top(redirected from blow their top)
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blow (one's) top
To become very angry, often quickly. Oh man, dad is going to blow his top when he sees that I wrecked his car!
blow one's top
1. Also, blow one's stack. Fly into a rage; lose one's composure. For example, If she calls about this one more time I'm going to blow my top, or Warren is generally very easy-going, but today he blew his stack. The top here has been likened to the top of an erupting volcano; the stack alludes to a smokestack. [Slang; first half of 1900s]
2. Go crazy, become insane, as in When she regains consciousness, she just may blow her top. [Slang; first half of 1900s] Also see flip one's lid.
blow your topINFORMAL
If you blow your top, you become very angry with someone and shout at them. I blew my top recently and broke my right hand hitting a dustbin. I never asked personal questions because she'd always blow her top. Compare with blow your stack.
blow your toplose your temper.
Two, chiefly North American, variants are blow your lid and blow your stack .