Characters
I’m a neurotic nut, but you’re crazy!
— Felix Ungar · The Odd Couple

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker readily admits to being a fussy, anxious eccentric, then immediately turns the label on the other person and calls them crazy. The line pairs modest self-criticism with a sharper accusation, as though one's own quirks are tolerable but the other's are truly alarming.
Context reviewed