horny hangover
The mysterious and overwhelming urge to have sex the day after a night of hard drinking, despite being completely dehydrated and having a massive headache.
"I've got a serious case of the horny hangover. I feel like total shit but my boner won't go away."
hangover horniness
The sexual desire many men and some women experience during the day following a night of heavy drinking. This may be caused by a temporary hormonal imbalance and/or by temporary fatigue within certain areas of the brain. Effects can last up to 24 hours, but may be offset by physical fatigue, which inhibits the desire for strenuous physical activity.
We didn't get out of bed until noon today. My husband had a severe case of hangover horniness.