The 'CBF Detected' meme originated from the Geometry Dash level 'Nullscapes,' created by the user ItzKiba in August 2024. The level gained notoriety for containing a script that checks if the player is using the 'Click Between Frames' (CBF) mod—a tool that allows for higher precision inputs than the base game. If detected, the level displays a red warning message and prevents progress. This sparked an intense debate within the GD community about whether the mod constitutes cheating. The screen itself quickly turned into a meme, with players photoshopping the 'CBF Detected' warning into other games like Elden Ring and Minecraft, or even into historical photos, treating the mod-blocker like a surreal jump scare or an inescapable cosmic authority.