to complain constantly or incessantly in such a way as to be noisy; an action performed by an 'agony ant' or one who behaves in a way in which they appear to be complaining/worrying most every time they are encountered; one who appears to only see life as a series of stressful, sometimes tragic events and never has anything pleasant to say.
see also, aganoize (verb), aganoise (verb), agony ant (noun)
My friend, later that day: "How's your mom?"
Me: "She started to aganoise, so I had to ignore her."
Friend: “Meh. She’s such an agony ant.”