When you start a lot of tasks at work, and get back home without finishing them and can't stop thinking of their outcomes. It is like a thoughts paralysis preventing you engaging in personal commitments.
Lag being the delay of acknowledgment of the task.
Similar to jet lag, when you've spent so long on pharmaceutical remedies you forget where who and what you are while everyone expected you to do exactly what they did and not ended up with individual issues and personal problems
I've got a case of drug lag this has to be a mistrial as somehow I get a virus and now my whole life falls apart