What is Coffee-lag?
1.
Caffeine withdrawal as a consequence of alterations to circadian rhythms leading one's body to believe, at random periods during the day or night, that it is time for one's next cup of coffee.
HUSBAND & WIFE RETURN FROM TRIP TO PARIS.
Wife: Why are you getting up in the middle of the night to make coffee?
Husband: It's so strange; I feel I need a café au lait.
Wife: Oh no, you must have
coffee-lag !