Jesus Christ how horrifying refers to a popular phrase, originating from a webcomic panel, as a man says it to another.
Online, the panel and the quote are used as a reaction image macro for expressing shock at the disturbing nature of something.
The comic panel comes from an issue of Horribleville, posted by KC Green on March 29th, 2009.
It depicts someone mistaking a full-grown man with a “fat ugly disgusting baby” saying “Jesus Christ how horrifying” on the last panel.
An animation of the comic was uploaded to YouTube by bobvids on April 6th, 2009.
The first image macro use of the expression can be tied to Facepunch Forums, where user The Man of “Wat” posted it on September 10th, 2010.
“Jesus Christ how horrifying” would appear on forums, image and message boards as well as YouTube content, throughout the 2010’s, although the meme’s popularity peaked in December 2011.