The Mean Reds

From Breakfast at Tiffany's...
Holly Golightly:
You know those days when you get the mean reds?
Paul Varjak:
The mean reds, you mean like the blues?
Holly Golightly:
No. The blues are because you're getting fat and maybe it's been raining too long, you're just sad that's all. The mean reds are horrible. Suddenly you're afraid and you don't know what you're afraid of. Do you ever get that feeling?
Paul Varjak:
Sure.

Having a case of the mean reds today.
Self-professed theory: Too much happiness in a single day kills the positive vibes for the next day.