Crispy

The act of being angry or bitter about something for a prolonged period of time, in contrast to the word "salty" which carries a comparable meaning but is acute and momentary.

Social workers and nursing staff are notoriously crispy at all times with malingering patience.

After Mariah Carey's most recent turn down, Eminem is still as crispy as ever.

After working 12 hour shifts for 13 days straight, John was crispier than a slice of bacon left on the stove top too long.