look up any word, like hipster:
 
1.
adj.

1. a feeling of unease due to anxiety about an impending bowel movement

2. a feeling of unease due to a desire to eliminate one's bowels, specifically accompanied by an inability to perform this function

3. both of the above can be caused by the urge to move one's bowels in places considered uncomfortable, such as public restrooms or bathrooms in houses of people you know well or otherwise

4. anxiety caused by constipation

(etymology: combination of "uneasy" and "feces")
I'm feeling unfeasy because haven't taken a shit in 4 days.
by CC January 27, 2005