Characters
I got three hundred and sixty Christmas cards! ...And I'm not sending ANY of them until someone sends ME one.
— Michael · Do Not Adjust Your Set

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker has hundreds of Christmas cards ready but refuses to send any until receiving one first. The emphatic demand turns a generous seasonal gesture into a contest over who makes the first move. Abundance of cards sits comically beside a shortage of goodwill.
Context reviewed