Leaves when one should be ready to retire? (6,3)
I believe the answer is:
lights out
I believe this is a double definition.
'leaves' is the first definition.
(I've seen this before)
'when one should be ready to retire?' is the second definition.
(I've seen this before)
(Other definitions for lights out that I've seen before include "Time to switch off" , "Go to sleep!" , "Does a runner" , "Bedtime signal" , "Rushes off" .)