The phrase okie dokie usually signals cheerful agreement, so negating it became an easy shorthand online for comic disapproval. Short voice lines like this spread through meme edits, reaction videos and soundboards because they are instantly quotable and work without any visual setup. Creators reuse it over fails, bad ideas and escalating jokes, letting the polite wording soften a firm objection. Its popularity comes from that contrast and from how quickly a viewer understands the intended reaction before the clip has even finished playing through fully.