Noun
1) A "disease" diagnosed when the following symptoms occur:
-random spurts of giggling, humming slow songs, reciting Shakespeare prose
-odd red spots on or around the neck area
-odd abdominal feelings
-constant smiling
-lightheadedness and hallucinations
-flushed cheeks
-sudden boost of self-esteem
-etc.

2) Also spelled "Humoritis"

3) A.K.A "love"

When you eat dirt for the first time and leave your family to build a shack in the woods

Additional symptoms include:
-tendancy to cling to and desire a certain person
-displaying selflessness