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?"See also: after, morning, night
the morning after (the night before)
n. a hangover. Do worries about the morning after keep you from having a good time at parties?See also: after, before, morning, nightEncyclopediaSeeMorning