Eeby Deeby refers to a surreal internet meme that typically involves characters being sent to a mysterious, purgatory-like dimension. The phrase originated from a Tumblr post featuring a photo of an elevator panel with a 'B' floor misread or edited as 'Eeby Deeby,' which users interpreted as a sinister or nonsensical destination. It gained massive popularity in late 2020 and early 2021, often featuring the character Mars from the film 'Mars Needs Moms' or various cats being physically banished into the void. The meme thrives on absurdist humor and the specific dread of being sent to an inexplicable place from which there is no escape.