Hello everyone!
Happy Saturday.
Today's new idiom is "slack off"
It means to become slow and lazy in your work or studies.
Example 1
A. You have to study, man! Why are you slacking off ?
B. I've lost interest.
Example 2
Many workers slack off a little at the end of the week.
Example 3
Summer's over, so I expect business to start slacking off .
https://idioms.thefreedictionary.com/slack+off