Characters
What, did you take Stupid Pills this morning?
— Mr. Potato Head · Toy Story

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The insult invents a medication that would account for foolish behavior. Phrasing it as a question gives the accusation the appearance of seeking an explanation. The morning reference makes the imagined cause sound recent and ordinary, which adds to the absurdity of the proposed pills.
Context reviewed