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