Like a professor emeritus, a professor ameritus is a professor who has retired except in this case without having racked up any meritorious accomplishments such as publications, research grants, or teaching awards; a retired academic goldbrick.
Having accomplished nothing throughout his long academic career except collecting a substantial undeserved salary and enviable retirement benefits, they should've conferred the title of professor ameritus (i.e. without merit) upon him.
Ameritrash is port-manteau of "American trash" meant as a pejorative towards a genre of American boardgames. In general, this connotes games that highly emphasize theme (i.e. story, background, motivation, etc), player to player conflict, and usually feature a moderate to high element of luck. This is used in contrast to Eurogames.
There was much debate as to whether "Axis & Allies" was Ameritrash or not.
The feeling you get after working for a large company for a few months when you finally realise that you will not make a difference ..... usually quickly followed by "Oh fuck it, who cares"
Day 1 of new job: Oh what a great job, i will do my best
Day 10 of new job: I must try harder
Day 20 of new job: If i keep going people will listen to me
Day 30 of new job: Oh fuck it, who cares ... put the kettle on
Congratulation you have Ameyitis