pull your socks up
US /pʊl jʊər sɑks ʌp/
UK /pʊl jʊər sɑks ʌp/
1.
to make an effort to improve your work or behavior because it is not good enough
:
•
You need to pull your socks up if you want to pass the exam.
•
The team was told to pull their socks up after a series of poor performances.