Gnomer State of Mind
To be completely neurologically agitated beyond reasonable explanation for months, up to years at a time.
Jack: Yo man, are you doing all right? You just keep walking around with a blank face breathing hard.
Mick: Nah man. I'm in a Gnomer State of Mind.
Jack: ..
Mick: Nah man. I'm in a Gnomer State of Mind.
Jack: ..