The story
From the sandbox video game Minecraft, in which applying a name tag to a mob (game entity) with the custom name Dinnerbone turns that entity upside down. This feature is a reference to Nathan 'Dinnerbone' Adams, a Minecraft developer, who commonly displays himself and his online avatars upside down as a signature trope. Adams' username is a tribute to the name of a former online friend, Teabone, perhaps related to T-bone.
Etymology from Wiktionary, CC BY-SA 4.0.