When working in the bar industry you have to close in the evening and re open in the morning.
You get out of work after a night shift, leaving the bar at 3- 4am in the morning, having to be back at the bar again the next day to open. Good old clopen.
In shift work in any job: Whenever you work the closing shift and then the next morningwork the opening shift. Giving the employee an improper amount of time to refresh and feel rested between shifts.
Jake to Elizabeth: I'm feeling kind of sluggish this morning, worked another clopen!
To close and then open the following shift. More severe on the weekends due to the later close. Typically involves complete sleep deprivation and a certain punchy giddiness that may or may not wear off during the course of the shift.
The redhead was scheduled to clopen for the fourth time in a week and she was a hot mess.