Penis Inspection Day is a long-standing internet urban legend and prank that suggests schools or organizations hold mandatory, highly intrusive physical check-ups. Originating in the early days of message boards like 4chan and Usenet, the meme plays on the awkwardness and absurdity of childhood health screenings. It typically functions as a 'bait' meme, where users are tricked into believing an official event is occurring, or as a surreal joke highlighting institutional overreach. While entirely fictional, its persistence in internet culture has made it a staple for ironic humor and nostalgic trolling, often used to catch unsuspecting people off guard in online discussions.