The 'They Still Do Not Realize' meme, often starting with a 'Day' count, features a character or animal blending into an environment where they clearly don't belong. The humor relies on the internal monologue of the 'infiltrator' who believes their disguise is flawless despite being obvious to the viewer. This trope gained massive popularity on Reddit and Tumblr through photos of animals in unusual spots, like a pug in a bowl of potatoes or a bird sitting among plush toys. It has since become a staple for expressing feelings of being an imposter or simply highlighting hilarious instances of unintentional camouflage in the real world.