What are some idiomatic expressions that describe a difficult job?

Question

What are some idiomatic expressions that describe a difficult job?

Answer 1

plaiting fog... getting blood form a stone... a losing battle... flogging a dead horse... The devil is in the details

Answer 2

a herculean task

Answer 3

sticky situation.....hard road to hoe....rowing against the tide...

impossible hurdle to jump.....swimming against the tide.....

battling against the winds ...treading water....fighting with one hand tied behind your back.....a stab in the dark...making bricks without straw...trying to square a circle.....weave a rope of sand....gather grapes from thorns

Answer 4

It burns my bun.

Answer 5

...getting the toothpaste back into the tube...