SCP-6661 is a phenomenon surrounding a particular Internet meme
1. SCP-6661-1 is an Internet meme commonly known as Trollge. This meme spawned as a variant of the Trollface meme.
The meme starts out similar to the how a Trollface comic plays out, with the main character, Trollface
2, providing instructions to carry out a prank. What distinguishes SCP-6661-1 from a regular Trollface meme is that the prank instructions begin devolving into more macabre instructions with each panel. These steps culminate to an atrocity or sinister event occurring.
The final step of each comic seems to be a cognitohazardous switch that makes a reader carry out the act displayed in the comic. It is estimated that 0.25% of those exposed to SCP-6661-1 are susceptible to its anomalous effects. It is currently unknown on what basis readers are chosen to carry out the skits.