a short fuse
a short fuse
A tendency to become angered, enraged, or upset very quickly or easily; a short temper. I'm usually a pretty calm person, but whenever I start driving I find I have such a short fuse.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
short fuse
n. a quick temper. I knew she’d blow. She’s got a short fuse.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.