(something) is the last straw

(something) is the last straw

Something is the last thing experienced in a series of recurring offenses or problems that causes one to finally lose patience or for something to stop working. It alludes to the idea that a single additional piece of straw could cause an overladen camel to finally collapse. A: "Why are you getting upset about it now? Tom's been taking credit for your ideas for years." B: "Yeah, but him getting a promotion out of it is the last straw!" I've hiked miles and miles in these boots—I can't believe they finally fell apart while I was walking in my own driveway! But I guess that was the last straw.
See also: last, straw
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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