Ring demon

A condition involving discomfort or burning in the rectal area caused by eating spicy foods.

“Those peppers are hot, watch out for ring demon!”

“I got a case of ring demon from those ghost pepper wings.”

Phantom hangover

A hangover that is caused by the body being conditioned to consumption of alcohol, and triggered by memory/repetition.

If every Friday you get drunk, and have a hangover every Saturday as a result, your body becomes conditioned to feeling hungover upon waking up every Saturday.

If one friday you do not drink, but wake up feeling hungover anyway, due to your body just plain being used to the routine, you are the victim of a phantom hangover.

***Not an official medical condition, but it happens.

"You look like you had some fun last night."

"No, I didn't drink at all, but I got a phantom hangover!"