a sore head

a sore head

A headache, especially one that occurs during or because of a hangover. I woke up with a sore head and a rotten taste in my mouth, and I tried to remember what exactly had happened at the party last night. A: "Oof, not so loud, I've got a bit of a sore head." B: "What's the matter? Tie one too many on last night?"
See also: head, sore