You had a great night and now you’re having a bad morning. Your mouth is like cotton, your head is pounding. You feel irritable, sick, dizzy, and you’ve either snapped at or failed to respond to everyone who has dared to approach you. But you don’t need to suffer in silence. You hold the skeleton key to the universe, in the form of one simple word: resaca. Whisper it through clenched teeth and the waters will part. The scowls of your coworkers will immediately melt into rueful empathetic half-smiles. We’ve all been there before, you see.