the morning after (the night before)
A hangover. A: "Ugh, I feel so sick." B: "Sounds like the morning after the night before to me. Weren't you out at the bar last night?"
morning after (the night before)
a hangover; the feelings associated with having drunk too much alcohol. Do worries about the morning after keep you from having a good time at parties? She's suffering from the morning after the night before.
morning after, the
The generally unpleasant consequences of a previous action or activity. The term originated in the late nineteenth century and at first referred exclusively to the aftereffects of a drinking bout; it often was put as the morning after the night before. By the mid-twentieth century it had been extended to include the consequences of any prior action, although it retained the negative implications of a hangover. It is also used in the colloquial name for an oral contraceptive taken after intercourse has occurred, the morning-after pill.
See also: morning