Today we have an idiom.
A very interesting one for holidays but still. Enjoy.

work your socks off
OR
work your tail off

Meaning: If you work your socks off, or work your tail off, you work very hard.

For example:

We had to get the job finished by Friday, so we worked our socks off to get it done on time.

The sales team worked their tails off this quarter, and they've managed to beat the record for first-quarter sales figures.

Quick Quiz:

His exam's on Monday, so Paul will have to work his socks off if he:
a) wants to cheat
b) wants to pass
c) doesn't want to pass