1. Camels
2. Straw

1. Getting fed up!
2. The straw that broke the camel's back.

The last straw - sometimes said, 'the final straw'. Meaning: The last in a series of unpleasant or undesirable events that makes you unable to accept a situation any longer. If an event that follows a series of bad events or experience makes you feel you cannot tolerate a situation any more and finally decide to leave it or do something to change it, you call the event the last or final straw. People also call it the last/final straw that broke the camel's back. Example: The low salary and the demanding boss were bad enough, but the rude co-worker was the last straw. (Then I decided to quit the job.) I bought a car three months ago, but I had a brake and transmission problems. Last week's engine trouble was the final straw. (I decided to sell it or junk it.)