Apparently, they didn’t like my critter sizing.
Explanation: “Critter sizing” is a play on words combining “critter” (a term for small animals) and “sizing,” which suggests measuring or arranging them by size. The joke humorously implies that the act of organizing squirrels by height is akin to a ridiculous and nonsensical evaluation of animals, leading to the absurdity of being thrown out of a park for such a trivial activity.