one-eyed headache
This is when a person feels like the have a headache on only one side of the head, particularly felt on top of the eye or on the eyebrow.
person one: whats wrong?
person two: Dude I have this horrible headache, but its only one side!!
person one: oh, you must have a one-eyed headache.
person two: Dude I have this horrible headache, but its only one side!!
person one: oh, you must have a one-eyed headache.