It's a clever visual pun contrasting a "Normal Distribution" with a "Paranormal Distribution." - The top part shows a classic bell curve labeled "Normal Distribution." - Below it, a ghostly figure mirrors the same axis and ticks, labeled "Paranormal Distribution."
https://files.mastodon.social/media_attachments/files/113/403/609/161/939/221/original/f1a59eddfc128bb0.jpg