Below is a picture of Noh actor Otoshige Sakai wearing a hannya demon mask.
Whatever its original meaning, that pained expression coupled with the actor’s hands clasped desperately to his temples, accurately depicts how I feel after a particularly heavy drinking session. One when the intensity of the headache is almost enough to induce tears, and lying in a darkened room remains the only option.
I hasten to add however that I used the word depict. In, ahem, noh way do I bear even the slightest resemblance to the hannya demon shown in the picture. Honestly!