the straw that broke the camel's back

The last straw. The final bit needed to tilt the balance over to one side or send one over the edge.

After following her around for days and making obscene phone calls he threatened her son. For her, that was the straw that broke the camel's back and she went to the police.

the straw that broke the camel's back by Tharish T June 3, 2005

The Foam That Broke The Camel's Back 

A bad, airy, non-defined business idea that you think of to distract yourself from doing work you are meant to be doing even when you already have 5 businesses on the go and 100 ideas in the works.

"Hey man, what are you up to?"
"Doing my tax return. Hey, do you think I could make a product where you completely fill the inside of a car with foam and it cleans while it dissolves?"
"Dude, that'd be the foam that broke the camel's back"

The Foam That Broke The Camel's Back by slimtotheshady July 8, 2018

Licking the camels back

The feeling you have in your mouth the morning after drinking most of a bottle of Kinsey vodka . Like licking the back of a Saharen camel with extremely coarse and dry hair.

Philip: I'm so hungover after those two pints last night.
Dave: Ya feels like I was licking the camels backW.B Yeats.

Licking the camels back by Obair lamh January 27, 2010

put a hump on a camels back 

Phrase used to describe really strong gear.

Man, this shit really puts a hump on a camels back!

put a hump on a camels back by nitram May 29, 2004