The term a cyclist uses to describe what their bike seat feels like after it has become extremely uncomfortable due to either the duration of a bike ride or the number of consecutive days of bike riding.
By the fifth day of the Bicycle Ride Across Nebraska (BRAN), I could swear my seat had turned into an ass hatchet.
The coworker who immediately upon entering the workplace becomes an attached pain in the ass until the end of day. Usually accomplished by a war against silence or personal space.
Only nine hours until this ass hatchet can be safely removed.