Noun.

A very unpleasant and undesirable disease; used in comparisons to express the even greater unpleasantness and undesirability of the object to which it is compared.

this is what my mate ed has every time he's Ill. Mainly due to fucking cats.

An unpleasant infection causing people to snore abnormally loud. Often caught at large gatherings such as music festivals from lack of sleep and close contact with large groups of people.